Locate the Phone Owner's Name and Address
Area Code (815) Illinois, USA
| Area Code: | 815 |
| State: | Illinois (IL) |
| Country: | United States |
| Main Cities: | Rockford, IL Joliet, IL Kankakee, IL Woodstock, IL Dekalb, IL Freeport, IL |
Area Code (815) serves 186 Cities:
Rockford, Joliet, Kankakee, Woodstock, Dekalb, Freeport, Mchenry, Crystal Lake, Sterling, Plainfield, Lockport, Morris, Ottawa, Oglesby, Dixon, La Salle, Princeton, La Grange Park, Loves Park, Minooka, Streator, Harvard, Frankfort, Gardner, Crescent City, Belvidere, Elizabeth, Utica, Manhattan, Watseka, Milledgeville, Mendota, Pontiac, Prophetstown, New Lenox, Marseilles, Morrison, Sycamore, Pecatonica, Rochelle, Durand, Momence, Shannon, Coal City, Lanark, Grant Park, Elwood, Galena, Tampico, Lyndon, Romeoville, Dakota, Byron, Mt Carroll, Marengo, Fulton, Apple River, Beloit, Somonauk, Cornell, New Milford, Rockton, Savanna, Malta, Braidwood, Seneca, Spring Valley, Oregon, Hennepin, Amboy, Gilman, Herscher, Milford, Winslow, Graymont, Poplar Grove, East Dubuque, Lena, Manteno, Roscoe, Orangeville, Dwight, Wilmington, Davis, Rock Falls, Tonica, Sandwich, Ashkum, Forreston, Franklin Grove, Sheffield, Spring Grove, Saunemin, Scales Mound, Hanover, Mt Morris, Sublette, Leaf River, Ashton, Flanagan, Warren, St Anne, Chadwick, Earlville, Emington, Clifton, Winnebago, Capron, Chebanse, Mc Connell, La Moille, Pearl City, Polo, Cullom, Stockton, Wonder Lake, Harmon, Union, German Valley, Kirkland, Magnolia, Danforth, Cissna Park, Martinton, Piper City, Mc Nabb, Fairbury, Ladd, West Brooklyn, Shabbona, Cherry Valley, Putnam, Newark, Chenoa, Walnut, Malden, Granville, Wellington, Hinckley, Sheridan, Tiskilwa, South Beloit, Kinsman, Hebron, Mazon, Chicago, Steward, Forrest, Long Point, Waterman, Garden Prairie, Richmond, Rutland, Onarga, Reddick, Lostant, Genoa, Northbrook, Sheldon, Strawn, Caledonia, Yorkville, Paw Paw, Harding, Beaverville, Saint Anne, Ohio, Donovan, Chatsworth, Maple Park, Grand Ridge, Cabery, Leland, Stillman Valley, Kempton, Wyanet, Odell, Verona, Compton, Stelle, Ransom, Monroe Center, Wenona, Thomson, Lisbon and Toluca located in the state of Illinois, United States.
Area Code (815) Illinois Counties:
Boone, Bureau, Carroll, Cook, Dekalb, Ford, Grundy, Iroquois, Jo Daviess, Kane, Kankakee, Kendall, La Salle, Lee, Livingston, Marshall, Mchenry, Mclean, Ogle, Putnam, Stephenson, Whiteside, Will and Winnebago.
Area Code 815 List of Prefixes
| Prefix | Location | Carrier | |
| (815) 200 | La Salle | IllinoisIL | Paetec Communications |
| (815) 201 | Rockford | IllinoisIL | Bandwidth.com - CLEC |
| (815) 202 | Oglesby | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 203 | Joliet | IllinoisIL | USA Mobility Wireless Inc |
| (815) 204 | Crystal Lake | IllinoisIL | USA Mobility Wireless Inc |
| (815) 205 | La Grange Park | IllinoisIL | Centurylink Communications LLC |
| (815) 206 | Woodstock | IllinoisIL | Ameritech Illinois |
| (815) 207 | Joliet | IllinoisIL | AT&T Local |
| (815) 208 | Fulton | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 209 | Rockford | IllinoisIL | Level 3 Communications |
| (815) 210 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 212 | Joliet | IllinoisIL | T-Mobile USA |
| (815) 213 | Sterling | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 214 | Kankakee | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 215 | New Lenox | IllinoisIL | First Communications LLC |
| (815) 216 | Kankakee | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 217 | Dekalb | IllinoisIL | Digital Network Access Communications |
| (815) 218 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 219 | Crystal Lake | IllinoisIL | Sprint Spectrum L.P. |
| (815) 220 | La Salle | IllinoisIL | Ameritech Illinois |
| (815) 221 | Lockport | IllinoisIL | Teleport Communications America |
| (815) 222 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 223 | La Salle | IllinoisIL | Ameritech Illinois |
| (815) 224 | La Salle | IllinoisIL | Ameritech Illinois |
| (815) 225 | Milledgeville | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 226 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 227 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 228 | Oglesby | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 229 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 230 | Plainfield | IllinoisIL | Broadwing Communications |
| (815) 231 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 232 | Freeport | IllinoisIL | Frontier North |
| (815) 233 | Freeport | IllinoisIL | Frontier North |
| (815) 234 | Byron | IllinoisIL | Frontier North |
| (815) 235 | Freeport | IllinoisIL | Frontier North |
| (815) 236 | Woodstock | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 237 | Gardner | IllinoisIL | Ameritech Illinois |
| (815) 238 | Freeport | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 239 | Pecatonica | IllinoisIL | Frontier North |
| (815) 240 | Rockford | IllinoisIL | Charter Fiberlink - Illinois |
| (815) 241 | Northbrook | IllinoisIL | American Messaging (AM) |
| (815) 242 | Rockford | IllinoisIL | Bandwidth.com - CLEC |
| (815) 243 | Rockford | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 244 | Mt Carroll | IllinoisIL | Gallatin River Communications DBA Centurylink |
| (815) 245 | Woodstock | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 246 | Earlville | IllinoisIL | Frontier North |
| (815) 247 | Pecatonica | IllinoisIL | Frontier North |
| (815) 248 | Durand | IllinoisIL | Frontier North |
| (815) 249 | Grand Ridge | IllinoisIL | Frontier North |
| (815) 250 | La Salle | IllinoisIL | Comcast Phone of Illinois DBA Comco |
| (815) 251 | Rock Falls | IllinoisIL | Gallatin River Communications DBA Centurylink |
| (815) 252 | Oglesby | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 253 | Kempton | IllinoisIL | Frontier Communications of Illinois |
| (815) 254 | Plainfield | IllinoisIL | Ameritech Illinois |
| (815) 255 | Minooka | IllinoisIL | US Xchange of Illinois LLC DBA Choice One Comm IL |
| (815) 256 | Stelle | IllinoisIL | Stelle Telephone Co. |
| (815) 257 | Streator | IllinoisIL | Illinois Valley Cellular Rsa 2-ii Partnership |
| (815) 258 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 259 | Thomson | IllinoisIL | Gallatin River Communications DBA Centurylink |
| (815) 260 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 261 | Crystal Lake | IllinoisIL | MCI Worldcom Communications |
| (815) 262 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 263 | Kankakee | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 264 | Waterman | IllinoisIL | Frontier North |
| (815) 265 | Gilman | IllinoisIL | Ameritech Illinois |
| (815) 266 | Freeport | IllinoisIL | Frontier North |
| (815) 267 | Plainfield | IllinoisIL | MCI Worldcom Communications |
| (815) 268 | Onarga | IllinoisIL | Ameritech Illinois |
| (815) 269 | Danforth | IllinoisIL | Frontier Communications of The Carolinas, Inc |
| (815) 270 | Lanark | IllinoisIL | Charter Fiberlink - Illinois |
| (815) 271 | Mchenry | IllinoisIL | MCI Worldcom Communications |
| (815) 272 | Joliet | IllinoisIL | MCI Worldcom Communications |
| (815) 273 | Savanna | IllinoisIL | Gallatin River Communications DBA Centurylink |
| (815) 274 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 275 | Freeport | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 276 | Crystal Lake | IllinoisIL | Teleport Communications America |
| (815) 277 | Frankfort | IllinoisIL | Teleport Communications America |
| (815) 278 | Kankakee | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 279 | Kankakee | IllinoisIL | American Messaging (AM) |
| (815) 280 | Joliet | IllinoisIL | Teleport Communications America |
| (815) 281 | Galena | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 282 | Loves Park | IllinoisIL | Ameritech Illinois |
| (815) 283 | Dekalb | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 284 | Dixon | IllinoisIL | Gallatin River Communications DBA Centurylink |
| (815) 285 | Dixon | IllinoisIL | Gallatin River Communications DBA Centurylink |
| (815) 286 | Hinckley | IllinoisIL | Frontier North |
| (815) 287 | Verona | IllinoisIL | Ameritech Illinois |
| (815) 288 | Dixon | IllinoisIL | Gallatin River Communications DBA Centurylink |
| (815) 289 | Rockford | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 290 | Minooka | IllinoisIL | SBC Internet Services, Inc. |
| (815) 291 | Freeport | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 292 | South Beloit | IllinoisIL | Bergen Telephone Co. - Illinois |
| (815) 293 | Romeoville | IllinoisIL | Ameritech Illinois |
| (815) 294 | La Grange Park | IllinoisIL | USA Mobility Wireless Inc |
| (815) 295 | Kankakee | IllinoisIL | T-Mobile USA |
| (815) 296 | Rockford | IllinoisIL | USA Mobility Wireless Inc |
| (815) 297 | Freeport | IllinoisIL | Frontier North |
| (815) 298 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 299 | Rockford | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 300 | Chicago | IllinoisIL | Ameritech Illinois |
| (815) 301 | Crystal Lake | IllinoisIL | Broadwing Communications |
| (815) 302 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 303 | Princeton | IllinoisIL | Illinois Valley Cellular Rsa 2-i Partnership |
| (815) 304 | Kankakee | IllinoisIL | Broadwing Communications |
| (815) 305 | Gardner | IllinoisIL | Broadwing Communications |
| (815) 306 | Lockport | IllinoisIL | Broadwing Communications |
| (815) 307 | Mchenry | IllinoisIL | Broadwing Communications |
| (815) 308 | Woodstock | IllinoisIL | Broadwing Communications |
| (815) 309 | Shannon | IllinoisIL | Aero North Communications |
| (815) 310 | Utica | IllinoisIL | Broadwing Communications |
| (815) 312 | Rockford | IllinoisIL | YMAX Communications Corp. |
| (815) 313 | Ottawa | IllinoisIL | Broadwing Communications |
| (815) 314 | Manhattan | IllinoisIL | Broadwing Communications |
| (815) 315 | Rockford | IllinoisIL | Level 3 Communications |
| (815) 316 | Rockford | IllinoisIL | Tds Metrocom Inc. - IL |
| (815) 317 | Crescent City | IllinoisIL | Broadwing Communications |
| (815) 318 | Morris | IllinoisIL | Broadwing Communications |
| (815) 319 | Rockford | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 320 | Kankakee | IllinoisIL | Peerless Network of Illinois |
| (815) 321 | Woodstock | IllinoisIL | XO Communications Illinois |
| (815) 322 | Mchenry | IllinoisIL | Level 3 Communications |
| (815) 323 | Belvidere | IllinoisIL | Level 3 Communications |
| (815) 324 | Ottawa | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 325 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 326 | Oglesby | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 327 | Plainfield | IllinoisIL | Broadwing Communications |
| (815) 328 | Lockport | IllinoisIL | Broadwing Communications |
| (815) 329 | Rockford | IllinoisIL | SBC Internet Services, Inc. |
| (815) 330 | Crescent City | IllinoisIL | First Communications LLC |
| (815) 331 | Mchenry | IllinoisIL | Broadwing Communications |
| (815) 332 | Cherry Valley | IllinoisIL | Frontier North |
| (815) 333 | Woodstock | IllinoisIL | Broadwing Communications |
| (815) 334 | Woodstock | IllinoisIL | Ameritech Illinois |
| (815) 335 | Winnebago | IllinoisIL | Frontier North |
| (815) 336 | Milledgeville | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 337 | Woodstock | IllinoisIL | Ameritech Illinois |
| (815) 338 | Woodstock | IllinoisIL | Ameritech Illinois |
| (815) 339 | Granville | IllinoisIL | Frontier North |
| (815) 340 | La Moille | IllinoisIL | Comcast Phone of Illinois DBA Comco |
| (815) 341 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 342 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 343 | Oglesby | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 344 | Mchenry | IllinoisIL | Ameritech Illinois |
| (815) 345 | Woodstock | IllinoisIL | Level 3 Communications |
| (815) 346 | Gardner | IllinoisIL | Broadwing Communications |
| (815) 347 | Woodstock | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 348 | Kankakee | IllinoisIL | US Xchange of Illinois LLC DBA Choice One Comm IL |
| (815) 349 | Mchenry | IllinoisIL | XO Communications Illinois |
| (815) 350 | Franklin Grove | IllinoisIL | Essex Telcom |
| (815) 351 | Kankakee | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 352 | Kankakee | IllinoisIL | Broadwing Communications |
| (815) 353 | Woodstock | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 354 | Woodstock | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 355 | Woodstock | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 356 | Crystal Lake | IllinoisIL | Ameritech Illinois |
| (815) 357 | Seneca | IllinoisIL | Ameritech Illinois |
| (815) 358 | Cornell | IllinoisIL | C-r Telephone Co. |
| (815) 359 | Harmon | IllinoisIL | Gallatin River Communications DBA Centurylink |
| (815) 360 | Sublette | IllinoisIL | Essex Telcom |
| (815) 361 | Manhattan | IllinoisIL | Broadwing Communications |
| (815) 362 | German Valley | IllinoisIL | Frontier North |
| (815) 363 | Mchenry | IllinoisIL | Ameritech Illinois |
| (815) 364 | Morris | IllinoisIL | Broadwing Communications |
| (815) 365 | Reddick | IllinoisIL | Frontier North |
| (815) 366 | Ottawa | IllinoisIL | Broadwing Communications |
| (815) 367 | Winslow | IllinoisIL | Frontier North |
| (815) 368 | Lostant | IllinoisIL | Frontier North |
| (815) 369 | Lena | IllinoisIL | Frontier North |
| (815) 370 | Kankakee | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 371 | Utica | IllinoisIL | Broadwing Communications |
| (815) 372 | Romeoville | IllinoisIL | Ameritech Illinois |
| (815) 373 | Elwood | IllinoisIL | US Xchange of Illinois LLC DBA Choice One Comm IL |
| (815) 374 | Dwight | IllinoisIL | US Xchange of Illinois LLC DBA Choice One Comm IL |
| (815) 375 | Dekalb | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 376 | Ohio | IllinoisIL | Frontier North |
| (815) 377 | Crescent City | IllinoisIL | Broadwing Communications |
| (815) 378 | Rockford | IllinoisIL | Sprint Spectrum L.P. |
| (815) 379 | Walnut | IllinoisIL | Frontier North |
| (815) 380 | Sterling | IllinoisIL | Essex Telcom |
| (815) 381 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 382 | Woodstock | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 383 | Crescent City | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 384 | Malta | IllinoisIL | Frontier North |
| (815) 385 | Mchenry | IllinoisIL | Ameritech Illinois |
| (815) 386 | Kankakee | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 387 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 388 | Mchenry | IllinoisIL | Sprint Spectrum L.P. |
| (815) 389 | Beloit | IllinoisIL | Ameritech Illinois |
| (815) 390 | Braidwood | IllinoisIL | Comcast Phone of Illinois DBA Comco |
| (815) 391 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 392 | Kinsman | IllinoisIL | Kinsman Mutual Telephone Company |
| (815) 393 | Monroe Center | IllinoisIL | Frontier North |
| (815) 394 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 395 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 396 | Steward | IllinoisIL | Frontier North |
| (815) 397 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 398 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 399 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 400 | Morrison | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 401 | Kankakee | IllinoisIL | Level 3 Communications |
| (815) 402 | Galena | IllinoisIL | Level 3 Communications |
| (815) 403 | Mchenry | IllinoisIL | Sprint Spectrum L.P. |
| (815) 404 | Crystal Lake | IllinoisIL | Sprint Spectrum L.P. |
| (815) 405 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 406 | Byron | IllinoisIL | Frontier North |
| (815) 407 | Romeoville | IllinoisIL | Ameritech Illinois |
| (815) 408 | Utica | IllinoisIL | First Communications LLC |
| (815) 409 | Joliet | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 410 | La Salle | IllinoisIL | Level 3 Communications |
| (815) 412 | Frankfort | IllinoisIL | Broadwing Communications |
| (815) 413 | Morris | IllinoisIL | First Communications LLC |
| (815) 414 | Earlville | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 415 | Seneca | IllinoisIL | Ameritech Illinois |
| (815) 416 | Morris | IllinoisIL | Ameritech Illinois |
| (815) 417 | Braidwood | IllinoisIL | Ameritech Illinois |
| (815) 418 | Manhattan | IllinoisIL | First Communications LLC |
| (815) 419 | Pontiac | IllinoisIL | AT&T Local |
| (815) 420 | Malta | IllinoisIL | Essex Telcom |
| (815) 421 | Herscher | IllinoisIL | Ameritech Illinois |
| (815) 422 | St Anne | IllinoisIL | Ameritech Illinois |
| (815) 423 | Elwood | IllinoisIL | Ameritech Illinois |
| (815) 424 | Elwood | IllinoisIL | Ameritech Illinois |
| (815) 425 | Crystal Lake | IllinoisIL | Broadwing Communications |
| (815) 426 | Herscher | IllinoisIL | Ameritech Illinois |
| (815) 427 | St Anne | IllinoisIL | Ameritech Illinois |
| (815) 428 | Martinton | IllinoisIL | Frontier North |
| (815) 429 | Sheldon | IllinoisIL | Frontier North |
| (815) 430 | Mchenry | IllinoisIL | First Communications LLC |
| (815) 431 | Ottawa | IllinoisIL | Ameritech Illinois |
| (815) 432 | Watseka | IllinoisIL | Ameritech Illinois |
| (815) 433 | Ottawa | IllinoisIL | Ameritech Illinois |
| (815) 434 | Ottawa | IllinoisIL | Ameritech Illinois |
| (815) 435 | Beaverville | IllinoisIL | Frontier North |
| (815) 436 | Plainfield | IllinoisIL | Ameritech Illinois |
| (815) 437 | Putnam | IllinoisIL | Frontier North |
| (815) 438 | Tampico | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 439 | Plainfield | IllinoisIL | Ameritech Illinois |
| (815) 440 | Dixon | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 441 | Sterling | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 442 | Tonica | IllinoisIL | Tonica Telephone Co. |
| (815) 443 | Pearl City | IllinoisIL | Frontier North |
| (815) 444 | Crystal Lake | IllinoisIL | Ameritech Illinois |
| (815) 445 | Sheffield | IllinoisIL | Frontier North |
| (815) 446 | Oglesby | IllinoisIL | Frontier North |
| (815) 447 | Spring Valley | IllinoisIL | Frontier Communications of Depue |
| (815) 448 | Mazon | IllinoisIL | Ameritech Illinois |
| (815) 449 | Dakota | IllinoisIL | Frontier North |
| (815) 450 | Momence | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 451 | Woodstock | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 452 | Toluca | IllinoisIL | Frontier North |
| (815) 453 | Ashton | IllinoisIL | Frontier North |
| (815) 454 | Sheffield | IllinoisIL | Frontier North |
| (815) 455 | Crystal Lake | IllinoisIL | Ameritech Illinois |
| (815) 456 | Franklin Grove | IllinoisIL | Frontier North |
| (815) 457 | Cissna Park | IllinoisIL | Frontier Communications of The Carolinas, Inc |
| (815) 458 | Braidwood | IllinoisIL | Ameritech Illinois |
| (815) 459 | Crystal Lake | IllinoisIL | Ameritech Illinois |
| (815) 460 | Joliet | IllinoisIL | First Communications LLC |
| (815) 461 | Lockport | IllinoisIL | Broadwing Communications |
| (815) 462 | New Lenox | IllinoisIL | Ameritech Illinois |
| (815) 463 | New Lenox | IllinoisIL | Ameritech Illinois |
| (815) 464 | Frankfort | IllinoisIL | Ameritech Illinois |
| (815) 465 | Grant Park | IllinoisIL | Ameritech Illinois |
| (815) 466 | Grant Park | IllinoisIL | Ameritech Illinois |
| (815) 467 | Minooka | IllinoisIL | Ameritech Illinois |
| (815) 468 | Manteno | IllinoisIL | Ameritech Illinois |
| (815) 469 | Frankfort | IllinoisIL | Ameritech Illinois |
| (815) 470 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 471 | Watseka | IllinoisIL | Illinois Valley Cellular Rsa 2-i Partnership |
| (815) 472 | Momence | IllinoisIL | Ameritech Illinois |
| (815) 473 | Watseka | IllinoisIL | Frontier Communications of The Carolinas, Inc |
| (815) 474 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 475 | Yorkville | IllinoisIL | Ameritech Illinois |
| (815) 476 | Wilmington | IllinoisIL | Ameritech Illinois |
| (815) 477 | Crystal Lake | IllinoisIL | Ameritech Illinois |
| (815) 478 | Manhattan | IllinoisIL | Ameritech Illinois |
| (815) 479 | Crystal Lake | IllinoisIL | Ameritech Illinois |
| (815) 480 | Rockford | IllinoisIL | USA Mobility Wireless Inc |
| (815) 481 | La Grange Park | IllinoisIL | Illinois Valley Cellular Rsa 2-i Partnership |
| (815) 482 | Woodstock | IllinoisIL | Sprint Spectrum L.P. |
| (815) 483 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 484 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 485 | New Lenox | IllinoisIL | Ameritech Illinois |
| (815) 486 | Donovan | IllinoisIL | Frontier North |
| (815) 487 | Plainfield | IllinoisIL | First Communications LLC |
| (815) 488 | La Grange Park | IllinoisIL | Illinois Valley Cellular Rsa 2-i Partnership |
| (815) 489 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 490 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 491 | Rockford | IllinoisIL | 365 |
| (815) 492 | Apple River | IllinoisIL | Frontier North |
| (815) 493 | Lanark | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 494 | Rockford | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 495 | Leland | IllinoisIL | Frontier North |
| (815) 496 | Sheridan | IllinoisIL | Frontier North |
| (815) 497 | Compton | IllinoisIL | Frontier North |
| (815) 498 | Somonauk | IllinoisIL | Frontier North |
| (815) 499 | Sterling | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 500 | Marseilles | IllinoisIL | Sprint Communications Company, L.P. |
| (815) 501 | Dekalb | IllinoisIL | Sprint Spectrum L.P. |
| (815) 502 | Woodstock | IllinoisIL | First Communications LLC |
| (815) 503 | Mendota | IllinoisIL | Sprint Spectrum L.P. |
| (815) 504 | Gardner | IllinoisIL | First Communications LLC |
| (815) 505 | Rockford | IllinoisIL | T-Mobile USA |
| (815) 506 | Union | IllinoisIL | Level 3 Communications |
| (815) 507 | Momence | IllinoisIL | Level 3 Communications |
| (815) 508 | Dekalb | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 509 | Rockford | IllinoisIL | Sprint Spectrum L.P. |
| (815) 510 | Streator | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 512 | Lockport | IllinoisIL | First Communications LLC |
| (815) 513 | Morris | IllinoisIL | Level 3 Communications |
| (815) 514 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 515 | Watseka | IllinoisIL | Level 3 Communications |
| (815) 516 | Rockford | IllinoisIL | Sprint Spectrum L.P. |
| (815) 517 | Dekalb | IllinoisIL | MCI Worldcom Communications |
| (815) 518 | Coal City | IllinoisIL | First Communications LLC |
| (815) 519 | Rockford | IllinoisIL | Sprint Spectrum L.P. |
| (815) 520 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 521 | Minooka | IllinoisIL | Ameritech Illinois |
| (815) 522 | Kirkland | IllinoisIL | Frontier North |
| (815) 523 | Kankakee | IllinoisIL | Teleport Communications America |
| (815) 524 | Lockport | IllinoisIL | Teleport Communications America |
| (815) 525 | Beloit | IllinoisIL | Tds Metrocom Inc. - IL |
| (815) 526 | Crystal Lake | IllinoisIL | Teleport Communications America |
| (815) 527 | Woodstock | IllinoisIL | Teleport Communications America |
| (815) 528 | Mchenry | IllinoisIL | Teleport Communications America |
| (815) 529 | Woodstock | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 530 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 531 | Joliet | IllinoisIL | Teleport Communications America |
| (815) 532 | Morris | IllinoisIL | USA Mobility Wireless Inc |
| (815) 533 | La Grange Park | IllinoisIL | Indiana Paging Ntwk |
| (815) 534 | Frankfort | IllinoisIL | Level 3 Communications |
| (815) 535 | Sterling | IllinoisIL | Ameritech Illinois |
| (815) 536 | La Grange Park | IllinoisIL | USA Mobility Wireless Inc |
| (815) 537 | Prophetstown | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 538 | Mendota | IllinoisIL | Frontier North |
| (815) 539 | Mendota | IllinoisIL | Frontier North |
| (815) 540 | Rockford | IllinoisIL | Sprint Spectrum L.P. |
| (815) 541 | Freeport | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 542 | Tampico | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 543 | Rockford | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 544 | Belvidere | IllinoisIL | Frontier North |
| (815) 545 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 546 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 547 | Belvidere | IllinoisIL | Frontier North |
| (815) 548 | Sterling | IllinoisIL | Ameritech Illinois |
| (815) 549 | Kankakee | IllinoisIL | Sprint Spectrum L.P. |
| (815) 550 | Grant Park | IllinoisIL | Broadwing Communications |
| (815) 551 | Savanna | IllinoisIL | Essex Telcom |
| (815) 552 | Lockport | IllinoisIL | Ameritech Illinois |
| (815) 553 | Joliet | IllinoisIL | Ovation Communications of Illinois |
| (815) 554 | East Dubuque | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 556 | Plainfield | IllinoisIL | Broadwing Communications |
| (815) 557 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 558 | Rockford | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 559 | Fulton | IllinoisIL | Essex Telcom |
| (815) 560 | Harvard | IllinoisIL | Sprint Spectrum L.P. |
| (815) 561 | Rochelle | IllinoisIL | Frontier North |
| (815) 562 | Rochelle | IllinoisIL | Frontier North |
| (815) 563 | Dakota | IllinoisIL | Frontier North |
| (815) 564 | Sterling | IllinoisIL | Ameritech Illinois |
| (815) 565 | Morrison | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 566 | Belvidere | IllinoisIL | Level 3 Communications |
| (815) 567 | Emington | IllinoisIL | Frontier North |
| (815) 568 | Marengo | IllinoisIL | Ameritech Illinois |
| (815) 569 | Capron | IllinoisIL | Frontier North |
| (815) 570 | Sandwich | IllinoisIL | Level 3 Communications |
| (815) 571 | Shannon | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 572 | Marengo | IllinoisIL | Broadwing Communications |
| (815) 573 | Kankakee | IllinoisIL | Level 3 Communications |
| (815) 574 | Harmon | IllinoisIL | Essex Telcom |
| (815) 575 | Woodstock | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 576 | Polo | IllinoisIL | Essex Telcom |
| (815) 577 | Plainfield | IllinoisIL | Ameritech Illinois |
| (815) 578 | Mchenry | IllinoisIL | Ameritech Illinois |
| (815) 579 | La Salle | IllinoisIL | Sprint Spectrum L.P. |
| (815) 580 | Rockford | IllinoisIL | AT&T Local |
| (815) 581 | Spring Grove | IllinoisIL | Comcast Phone of Illinois DBA Comco |
| (815) 582 | Joliet | IllinoisIL | T-Mobile USA |
| (815) 583 | Morrison | IllinoisIL | Essex Telcom |
| (815) 584 | Dwight | IllinoisIL | Ameritech Illinois |
| (815) 585 | Morris | IllinoisIL | Level 3 Communications |
| (815) 586 | Ransom | IllinoisIL | C-r Telephone Co. |
| (815) 587 | Ottawa | IllinoisIL | Level 3 Communications |
| (815) 588 | Lockport | IllinoisIL | Ameritech Illinois |
| (815) 589 | Fulton | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 590 | Sterling | IllinoisIL | Sprint Spectrum L.P. |
| (815) 591 | Hanover | IllinoisIL | Frontier North |
| (815) 592 | Kankakee | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 593 | Dekalb | IllinoisIL | AT&T Local |
| (815) 594 | Apple River | IllinoisIL | Frontier North |
| (815) 595 | Oregon | IllinoisIL | AT&T Local |
| (815) 596 | Marengo | IllinoisIL | SBC Internet Services, Inc. |
| (815) 597 | Garden Prairie | IllinoisIL | Frontier North |
| (815) 598 | Elizabeth | IllinoisIL | Frontier North |
| (815) 599 | Freeport | IllinoisIL | Frontier North |
| (815) 600 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 601 | Rockford | IllinoisIL | Bitwise Communications |
| (815) 602 | Kankakee | IllinoisIL | First Communications LLC |
| (815) 603 | Kankakee | IllinoisIL | T-Mobile USA |
| (815) 604 | Dixon | IllinoisIL | Essex Telcom |
| (815) 605 | Grant Park | IllinoisIL | Level 3 Communications |
| (815) 606 | Ottawa | IllinoisIL | First Communications LLC |
| (815) 607 | Flanagan | IllinoisIL | Bitwise Communications |
| (815) 608 | Rockford | IllinoisIL | T-Mobile USA |
| (815) 609 | Plainfield | IllinoisIL | Ameritech Illinois |
| (815) 610 | Cornell | IllinoisIL | Bitwise Communications |
| (815) 612 | Graymont | IllinoisIL | Bitwise Communications |
| (815) 613 | Mt Carroll | IllinoisIL | Essex Telcom |
| (815) 614 | Kankakee | IllinoisIL | Broadwing Communications |
| (815) 615 | Mendota | IllinoisIL | Level 3 Communications |
| (815) 616 | Freeport | IllinoisIL | T-Mobile USA |
| (815) 617 | Ottawa | IllinoisIL | AT&T Local |
| (815) 618 | Freeport | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 619 | Rockton | IllinoisIL | Aero North Communications |
| (815) 620 | Prophetstown | IllinoisIL | Essex Telcom |
| (815) 621 | Rockford | IllinoisIL | Sprint Spectrum L.P. |
| (815) 622 | Sterling | IllinoisIL | Ameritech Illinois |
| (815) 623 | Roscoe | IllinoisIL | Frontier North |
| (815) 624 | Rockton | IllinoisIL | Frontier North |
| (815) 625 | Sterling | IllinoisIL | Ameritech Illinois |
| (815) 626 | Sterling | IllinoisIL | Ameritech Illinois |
| (815) 627 | Paw Paw | IllinoisIL | Frontier North |
| (815) 628 | West Brooklyn | IllinoisIL | Frontier North |
| (815) 629 | Durand | IllinoisIL | Frontier North |
| (815) 630 | Joliet | IllinoisIL | T-Mobile USA |
| (815) 631 | Sterling | IllinoisIL | Ameritech Illinois |
| (815) 632 | Sterling | IllinoisIL | Ameritech Illinois |
| (815) 633 | Loves Park | IllinoisIL | Ameritech Illinois |
| (815) 634 | Coal City | IllinoisIL | Ameritech Illinois |
| (815) 635 | Chatsworth | IllinoisIL | Frontier North |
| (815) 636 | Loves Park | IllinoisIL | Ameritech Illinois |
| (815) 637 | Loves Park | IllinoisIL | Ameritech Illinois |
| (815) 638 | La Moille | IllinoisIL | Frontier North |
| (815) 639 | Loves Park | IllinoisIL | Ameritech Illinois |
| (815) 640 | Ottawa | IllinoisIL | Teleport Communications America |
| (815) 641 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 642 | Minooka | IllinoisIL | Broadwing Communications |
| (815) 643 | Malden | IllinoisIL | Frontier North |
| (815) 644 | Crescent City | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 645 | Stillman Valley | IllinoisIL | Frontier North |
| (815) 646 | Tiskilwa | IllinoisIL | Frontier North |
| (815) 647 | Cullom | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 648 | Hebron | IllinoisIL | Frontier North |
| (815) 649 | Gardner | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 650 | Freeport | IllinoisIL | AT&T Local |
| (815) 651 | Joliet | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 652 | Dixon | IllinoisIL | Gallatin River Communications DBA Centurylink |
| (815) 653 | Wonder Lake | IllinoisIL | Frontier North |
| (815) 654 | Loves Park | IllinoisIL | Ameritech Illinois |
| (815) 655 | Milledgeville | IllinoisIL | Essex Telcom |
| (815) 656 | Freeport | IllinoisIL | Level 3 Communications |
| (815) 657 | Forrest | IllinoisIL | Ameritech Illinois |
| (815) 658 | Lanark | IllinoisIL | Essex Telcom |
| (815) 659 | Hennepin | IllinoisIL | Frontier North |
| (815) 660 | Lockport | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 661 | Morris | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 662 | Momence | IllinoisIL | Level 3 Communications |
| (815) 663 | Spring Valley | IllinoisIL | Frontier North |
| (815) 664 | Spring Valley | IllinoisIL | Frontier North |
| (815) 665 | Ottawa | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 666 | Joliet | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 667 | Utica | IllinoisIL | Ameritech Illinois |
| (815) 668 | Rockford | IllinoisIL | Neutral Tandem-illinois |
| (815) 669 | Mchenry | IllinoisIL | Level 3 Communications |
| (815) 670 | Rockford | IllinoisIL | Sprint Spectrum L.P. |
| (815) 671 | Joliet | IllinoisIL | Level 3 Communications |
| (815) 672 | Streator | IllinoisIL | Frontier North |
| (815) 673 | Streator | IllinoisIL | Frontier North |
| (815) 674 | Streator | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 675 | Spring Grove | IllinoisIL | Frontier North |
| (815) 676 | Plainfield | IllinoisIL | Level 3 Communications |
| (815) 677 | Elizabeth | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 678 | Richmond | IllinoisIL | Frontier North |
| (815) 679 | Mchenry | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 680 | Manhattan | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 681 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 682 | Milford | IllinoisIL | Frontier Communications of The Carolinas, Inc |
| (815) 683 | Crescent City | IllinoisIL | Ameritech Illinois |
| (815) 684 | Chadwick | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 685 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 686 | Piper City | IllinoisIL | Frontier North |
| (815) 687 | Woodstock | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 688 | Strawn | IllinoisIL | Frontier North |
| (815) 689 | Cullom | IllinoisIL | Frontier Communications of Illinois |
| (815) 690 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 691 | Utica | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 692 | Fairbury | IllinoisIL | Frontier North |
| (815) 693 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 694 | Clifton | IllinoisIL | Frontier North |
| (815) 695 | Newark | IllinoisIL | Ameritech Illinois |
| (815) 696 | Roscoe | IllinoisIL | Aero North Communications |
| (815) 697 | Chebanse | IllinoisIL | Frontier North |
| (815) 698 | Ashkum | IllinoisIL | Frontier North |
| (815) 699 | Wyanet | IllinoisIL | Frontier North |
| (815) 701 | Woodstock | IllinoisIL | Level 3 Communications |
| (815) 702 | Saunemin | IllinoisIL | Sprint Communications Company, L.P. |
| (815) 703 | Rockford | IllinoisIL | Sprint Spectrum L.P. |
| (815) 704 | Beloit | IllinoisIL | Mcleodusa Telecommunications Services - IL |
| (815) 705 | Morris | IllinoisIL | Teleport Communications America |
| (815) 706 | Lyndon | IllinoisIL | Essex Telcom |
| (815) 707 | Gilman | IllinoisIL | Level 3 Communications |
| (815) 708 | Rockford | IllinoisIL | Comcast Phone of Illinois DBA Comco |
| (815) 709 | Coal City | IllinoisIL | Level 3 Communications |
| (815) 710 | Morris | IllinoisIL | AT&T Local |
| (815) 712 | Harvard | IllinoisIL | Sprint Spectrum L.P. |
| (815) 713 | Rockford | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 714 | Joliet | IllinoisIL | Sprint Communications Company, L.P. |
| (815) 715 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 716 | Sterling | IllinoisIL | Sprint Spectrum L.P. |
| (815) 717 | New Lenox | IllinoisIL | Broadwing Communications |
| (815) 718 | Sterling | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 719 | Princeton | IllinoisIL | Sprint Spectrum L.P. |
| (815) 720 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 721 | Rockford | IllinoisIL | AT&T Local |
| (815) 722 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 723 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 724 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 725 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 726 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 727 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 728 | Wonder Lake | IllinoisIL | Frontier North |
| (815) 729 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 730 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 731 | Plainfield | IllinoisIL | Ameritech Illinois |
| (815) 732 | Oregon | IllinoisIL | Frontier North |
| (815) 733 | Plainfield | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 734 | Mt Morris | IllinoisIL | Frontier North |
| (815) 735 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 736 | Lisbon | IllinoisIL | Ameritech Illinois |
| (815) 737 | Capron | IllinoisIL | Sharon Telephone Co. - Illinois |
| (815) 738 | Leaf River | IllinoisIL | Leaf River Telephone Co. |
| (815) 739 | Sycamore | IllinoisIL | Sprint Spectrum L.P. |
| (815) 740 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 741 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 742 | Rockford | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 743 | Graymont | IllinoisIL | Frontier Communications of Prairie |
| (815) 744 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 745 | Warren | IllinoisIL | Frontier North |
| (815) 746 | Marseilles | IllinoisIL | Marseilles Telephone Co. of Marseilles |
| (815) 747 | East Dubuque | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 748 | Dekalb | IllinoisIL | Frontier North |
| (815) 749 | Rockford | IllinoisIL | Answer America DBA Answer USA |
| (815) 750 | Marseilles | IllinoisIL | Mtco Communications |
| (815) 751 | Dekalb | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 752 | Dekalb | IllinoisIL | Frontier North |
| (815) 753 | Dekalb | IllinoisIL | Frontier North |
| (815) 754 | Dekalb | IllinoisIL | Frontier North |
| (815) 755 | Dekalb | IllinoisIL | American Messaging (AM) |
| (815) 756 | Dekalb | IllinoisIL | Frontier North |
| (815) 757 | Dekalb | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 758 | Dekalb | IllinoisIL | Frontier North |
| (815) 759 | Mchenry | IllinoisIL | Ameritech Illinois |
| (815) 760 | Hennepin | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 761 | Dekalb | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 762 | Dekalb | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 763 | Rockford | IllinoisIL | Answer America DBA Answer USA |
| (815) 764 | Dekalb | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 765 | Poplar Grove | IllinoisIL | Frontier North |
| (815) 766 | Dekalb | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 767 | La Grange Park | IllinoisIL | American Messaging (AM) |
| (815) 768 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 769 | Seneca | IllinoisIL | Broadwing Communications |
| (815) 770 | Harvard | IllinoisIL | Charter Fiberlink - Illinois |
| (815) 771 | Ashkum | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 772 | Morrison | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 773 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 774 | Joliet | IllinoisIL | Ameritech Illinois |
| (815) 775 | Woodstock | IllinoisIL | USA Mobility Wireless Inc |
| (815) 776 | Galena | IllinoisIL | Ameritech Illinois |
| (815) 777 | Galena | IllinoisIL | Ameritech Illinois |
| (815) 778 | Lyndon | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 780 | La Salle | IllinoisIL | Broadwing Communications |
| (815) 781 | Chebanse | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 782 | Plainfield | IllinoisIL | Broadwing Communications |
| (815) 783 | Gilman | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 784 | Genoa | IllinoisIL | Frontier North |
| (815) 785 | Watseka | IllinoisIL | Rcn Telecom Services of Illinois |
| (815) 786 | Sandwich | IllinoisIL | Frontier North |
| (815) 787 | Dekalb | IllinoisIL | Frontier North |
| (815) 788 | Crystal Lake | IllinoisIL | Ameritech Illinois |
| (815) 789 | Orangeville | IllinoisIL | Frontier North |
| (815) 790 | Woodstock | IllinoisIL | Sprint Spectrum L.P. |
| (815) 791 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 792 | Harding | IllinoisIL | Ameritech Illinois |
| (815) 793 | Dekalb | IllinoisIL | T-Mobile USA |
| (815) 794 | Marseilles | IllinoisIL | Marseilles Telephone Co. of Marseilles |
| (815) 795 | Marseilles | IllinoisIL | Marseilles Telephone Co. of Marseilles |
| (815) 796 | Flanagan | IllinoisIL | Frontier Communications of Prairie |
| (815) 797 | Somonauk | IllinoisIL | Level 3 Communications |
| (815) 798 | Milledgeville | IllinoisIL | Essex Telcom |
| (815) 799 | Sterling | IllinoisIL | Level 3 Communications |
| (815) 800 | Poplar Grove | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 801 | Freeport | IllinoisIL | Aero North Communications |
| (815) 802 | Kankakee | IllinoisIL | Ameritech Illinois |
| (815) 803 | Byron | IllinoisIL | Aero North Communications |
| (815) 804 | Pecatonica | IllinoisIL | Aero North Communications |
| (815) 805 | Durand | IllinoisIL | Aero North Communications |
| (815) 806 | Frankfort | IllinoisIL | Ameritech Illinois |
| (815) 807 | German Valley | IllinoisIL | Aero North Communications |
| (815) 808 | Winslow | IllinoisIL | Aero North Communications |
| (815) 809 | Lena | IllinoisIL | Aero North Communications |
| (815) 810 | Pearl City | IllinoisIL | Aero North Communications |
| (815) 812 | Dakota | IllinoisIL | Aero North Communications |
| (815) 813 | Apple River | IllinoisIL | Aero North Communications |
| (815) 814 | Woodstock | IllinoisIL | T-Mobile USA |
| (815) 816 | Dakota | IllinoisIL | Aero North Communications |
| (815) 817 | Hanover | IllinoisIL | Aero North Communications |
| (815) 818 | Warren | IllinoisIL | Aero North Communications |
| (815) 819 | Orangeville | IllinoisIL | Aero North Communications |
| (815) 820 | Elizabeth | IllinoisIL | Aero North Communications |
| (815) 821 | Freeport | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 822 | Streator | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 823 | Joliet | IllinoisIL | XO Communications Illinois |
| (815) 824 | Shabbona | IllinoisIL | Frontier North |
| (815) 825 | Malta | IllinoisIL | Frontier North |
| (815) 826 | Somonauk | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 827 | Maple Park | IllinoisIL | Frontier North |
| (815) 828 | Minooka | IllinoisIL | XO Communications Illinois |
| (815) 829 | Chadwick | IllinoisIL | Essex Telcom |
| (815) 830 | Oglesby | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 831 | Davis | IllinoisIL | Aero North Communications |
| (815) 832 | Saunemin | IllinoisIL | Frontier Communications of Illinois |
| (815) 833 | Mc Connell | IllinoisIL | Aero North Communications |
| (815) 834 | Lockport | IllinoisIL | Ameritech Illinois |
| (815) 835 | Dixon | IllinoisIL | Essex Telcom |
| (815) 836 | Lockport | IllinoisIL | Ameritech Illinois |
| (815) 837 | Forreston | IllinoisIL | Aero North Communications |
| (815) 838 | Lockport | IllinoisIL | Ameritech Illinois |
| (815) 839 | Kankakee | IllinoisIL | XO Communications Illinois |
| (815) 840 | Stockton | IllinoisIL | Aero North Communications |
| (815) 841 | Mt Morris | IllinoisIL | Essex Telcom |
| (815) 842 | Pontiac | IllinoisIL | Frontier North |
| (815) 843 | Ashton | IllinoisIL | Essex Telcom |
| (815) 844 | Pontiac | IllinoisIL | Frontier North |
| (815) 845 | Scales Mound | IllinoisIL | Frontier North |
| (815) 846 | Joliet | IllinoisIL | Broadwing Communications |
| (815) 847 | Rockford | IllinoisIL | SBC Internet Services, Inc. |
| (815) 848 | Pontiac | IllinoisIL | Illinois Valley Cellular Rsa 2-i Partnership |
| (815) 849 | Sublette | IllinoisIL | Frontier North |
| (815) 850 | Pecatonica | IllinoisIL | Aero North Communications |
| (815) 851 | Kankakee | IllinoisIL | USA Mobility Wireless Inc |
| (815) 852 | Scales Mound | IllinoisIL | Aero North Communications |
| (815) 853 | Wenona | IllinoisIL | Frontier North |
| (815) 854 | Long Point | IllinoisIL | Frontier North |
| (815) 855 | Milledgeville | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 856 | Tonica | IllinoisIL | Leonore Mutual Telephone Co. |
| (815) 857 | Amboy | IllinoisIL | Frontier North |
| (815) 858 | Elizabeth | IllinoisIL | Frontier North |
| (815) 859 | Rock Falls | IllinoisIL | Essex Telcom |
| (815) 860 | Elwood | IllinoisIL | Teleport Communications America |
| (815) 861 | Woodstock | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 862 | Harvard | IllinoisIL | Charter Fiberlink - Illinois |
| (815) 863 | Rutland | IllinoisIL | Frontier North |
| (815) 864 | Shannon | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 865 | Davis | IllinoisIL | Frontier North |
| (815) 866 | Princeton | IllinoisIL | Illinois Valley Cellular Rsa 2-i Partnership |
| (815) 867 | Pontiac | IllinoisIL | Sprint Spectrum L.P. |
| (815) 868 | Mc Connell | IllinoisIL | Frontier North |
| (815) 869 | Magnolia | IllinoisIL | Frontier North |
| (815) 870 | Rockford | IllinoisIL | USA Mobility Wireless Inc |
| (815) 871 | Rockford | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 872 | Princeton | IllinoisIL | Frontier North |
| (815) 873 | New Milford | IllinoisIL | Frontier North |
| (815) 874 | New Milford | IllinoisIL | Frontier North |
| (815) 875 | Princeton | IllinoisIL | Frontier North |
| (815) 876 | Princeton | IllinoisIL | Frontier North |
| (815) 877 | Loves Park | IllinoisIL | Ameritech Illinois |
| (815) 878 | Princeton | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 879 | Princeton | IllinoisIL | Frontier North |
| (815) 880 | Woodstock | IllinoisIL | XO Communications Illinois |
| (815) 881 | Oregon | IllinoisIL | Essex Telcom |
| (815) 882 | Mc Nabb | IllinoisIL | Mcnabb Telephone Co. |
| (815) 883 | Oglesby | IllinoisIL | Ameritech Illinois |
| (815) 884 | Harvard | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 885 | Caledonia | IllinoisIL | Frontier North |
| (815) 886 | Romeoville | IllinoisIL | Ameritech Illinois |
| (815) 887 | Harvard | IllinoisIL | Teleport Communications America |
| (815) 888 | Rochelle | IllinoisIL | Level 3 Communications |
| (815) 889 | Milford | IllinoisIL | Frontier Communications of The Carolinas, Inc |
| (815) 890 | New Milford | IllinoisIL | Aero North Communications |
| (815) 891 | Winnebago | IllinoisIL | Aero North Communications |
| (815) 892 | Shannon | IllinoisIL | Essex Telcom |
| (815) 893 | Crystal Lake | IllinoisIL | Comcast Phone of Illinois DBA Comco |
| (815) 894 | Ladd | IllinoisIL | Frontier North |
| (815) 895 | Sycamore | IllinoisIL | Frontier North |
| (815) 896 | Durand | IllinoisIL | Aero North Communications |
| (815) 897 | Lyndon | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 898 | Elizabeth | IllinoisIL | Aero North Communications |
| (815) 899 | Sycamore | IllinoisIL | Frontier North |
| (815) 900 | Amboy | IllinoisIL | Cricket Communications |
| (815) 901 | Dekalb | IllinoisIL | Comcast Phone of Illinois DBA Comco |
| (815) 902 | Lyndon | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 903 | Mchenry | IllinoisIL | American Messaging (AM) |
| (815) 904 | Rockford | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 905 | Lockport | IllinoisIL | Level 3 Communications |
| (815) 906 | Mt Carroll | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 907 | Manteno | IllinoisIL | Broadwing Communications |
| (815) 908 | Freeport | IllinoisIL | Sprint Communications Company, L.P. |
| (815) 909 | Dekalb | IllinoisIL | T-Mobile USA |
| (815) 910 | Mendota | IllinoisIL | Illinois Valley Cellular Rsa 2-i Partnership |
| (815) 912 | Belvidere | IllinoisIL | Aero North Communications |
| (815) 913 | Joliet | IllinoisIL | Sprint Communications Company, L.P. |
| (815) 914 | Rockford | IllinoisIL | Sprint Spectrum L.P. |
| (815) 915 | Coal City | IllinoisIL | Level 3 Communications |
| (815) 916 | Minooka | IllinoisIL | Broadvox - CLEC |
| (815) 917 | Rochelle | IllinoisIL | Essex Telcom |
| (815) 918 | Clifton | IllinoisIL | Level 3 Communications |
| (815) 919 | Joliet | IllinoisIL | T-Mobile USA |
| (815) 920 | Cornell | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 921 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 922 | Kankakee | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 923 | Union | IllinoisIL | Ameritech Illinois |
| (815) 924 | Prophetstown | IllinoisIL | Essex Telcom |
| (815) 925 | Hennepin | IllinoisIL | Frontier North |
| (815) 926 | Wilmington | IllinoisIL | Broadwing Communications |
| (815) 927 | Joliet | IllinoisIL | Broadwing Communications |
| (815) 928 | Kankakee | IllinoisIL | Ameritech Illinois |
| (815) 929 | Kankakee | IllinoisIL | Ameritech Illinois |
| (815) 930 | Elizabeth | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 931 | Joliet | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 932 | Kankakee | IllinoisIL | Ameritech Illinois |
| (815) 933 | Kankakee | IllinoisIL | Ameritech Illinois |
| (815) 934 | Emington | IllinoisIL | Frontier North |
| (815) 935 | Kankakee | IllinoisIL | Ameritech Illinois |
| (815) 936 | Kankakee | IllinoisIL | Ameritech Illinois |
| (815) 937 | Kankakee | IllinoisIL | Ameritech Illinois |
| (815) 938 | Forreston | IllinoisIL | Frontier North |
| (815) 939 | Kankakee | IllinoisIL | Ameritech Illinois |
| (815) 940 | Gardner | IllinoisIL | Level 3 Communications |
| (815) 941 | Morris | IllinoisIL | Ameritech Illinois |
| (815) 942 | Morris | IllinoisIL | Ameritech Illinois |
| (815) 943 | Harvard | IllinoisIL | Ameritech Illinois |
| (815) 944 | Saint Anne | IllinoisIL | Ameritech Illinois |
| (815) 945 | Chenoa | IllinoisIL | Frontier North |
| (815) 946 | Polo | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 947 | Stockton | IllinoisIL | Frontier North |
| (815) 948 | Prophetstown | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 949 | Cabery | IllinoisIL | Frontier North |
| (815) 951 | Amboy | IllinoisIL | Essex Telcom |
| (815) 952 | Lanark | IllinoisIL | Aero North Communications |
| (815) 953 | Kankakee | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 954 | Kankakee | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 955 | Joliet | IllinoisIL | Sprint Spectrum L.P. |
| (815) 956 | Morrison | IllinoisIL | Citizens Telecom Co Illinois-frontier Citizens - IL |
| (815) 957 | Rockton | IllinoisIL | Level 3 Communications |
| (815) 960 | Leaf River | IllinoisIL | North County Communications Corp. - CA |
| (815) 961 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 962 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 963 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 964 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 965 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 966 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 967 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 968 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 969 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 970 | Sycamore | IllinoisIL | Sprint Spectrum L.P. |
| (815) 971 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 972 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 973 | Dixon | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 974 | Tampico | IllinoisIL | Essex Telcom |
| (815) 975 | Belvidere | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 977 | Rockford | IllinoisIL | MCI Worldcom Communications |
| (815) 978 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 979 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 980 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 981 | Ottawa | IllinoisIL | Level 3 Communications |
| (815) 982 | Tampico | IllinoisIL | Essex Telcom |
| (815) 983 | Rockford | IllinoisIL | American Messaging (AM) |
| (815) 984 | Wellington | IllinoisIL | Frontier Communications of The Carolinas, Inc |
| (815) 985 | Rockford | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 986 | Rockford | IllinoisIL | US Xchange of Illinois LLC DBA Choice One Comm IL |
| (815) 987 | Rockford | IllinoisIL | Ameritech Illinois |
| (815) 988 | Rockford | IllinoisIL | United States Cellular Corp. - Illinois |
| (815) 989 | Prophetstown | IllinoisIL | Mediacom Telephony of Illinois |
| (815) 990 | Freeport | IllinoisIL | Cellco Partnership DBA Verizon |
| (815) 991 | Sycamore | IllinoisIL | Essex Telcom |
| (815) 992 | Streator | IllinoisIL | Sprint Spectrum L.P. |
| (815) 993 | Oglesby | IllinoisIL | New Cingular Wireless PCS, LLC |
| (815) 994 | Dixon | IllinoisIL | Sprint Spectrum L.P. |
| (815) 995 | Dekalb | IllinoisIL | Teleport Communications America |
| (815) 996 | Savanna | IllinoisIL | Sprint Spectrum L.P. |
| (815) 997 | Rockford | IllinoisIL | Mcleodusa Telecommunications Services - IL |
| (815) 998 | Odell | IllinoisIL | Frontier North |
| (815) 999 | Joliet | IllinoisIL | Sprint Spectrum L.P. |