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Area Code (443) Maryland, USA

Area Code:443
State: Maryland (MD)
Country:United States
Main Cities:Baltimore, MD
Annapolis, MD
Columbia, MD
Towson, MD
Salisbury, MD
Catonsville, MD

Area Code (443) serves 80 Cities:

Baltimore, Annapolis, Columbia, Towson, Salisbury, Catonsville, Bel Air, Westminster, Elkton, Glen Burnie, Aberdeen, Reisterstown, Pikesville, Fallston, Easton, Edgewood, Prince Frederick, Severna Park, Sykesville, Cockeysville, Arbutus, Essex, Cambridge, Parkville, Hampstead, North East, Woodlawn, Elkridge, Chestertown, Randallstown, Odenton, Fork, Severn, Jessup, Dundalk, West River, Ellicott City, Brooklyn, Cardiff, Havre De Grace, Sparks Glencoe, Pasadena, Churchville, Middle River, Perryville, Jarrettsville, North Beach, Millersville, Port Deposit, Crofton, Glenwood, Parkton, Delmar, New Windsor, Sparrows Point, Ocean City, Laurel, Taneytown, Pocomoke, Centreville, Solomons, Berlin, Union Bridge, Princess Anne, Darlington, Sherwood Forest, Nanticoke, Crisfield, Harmans, Federalsburg, Willards, Snow Hill, Denton, Bishopville, Stevensville, Rhodesdale, Trappe, Mardela Springs, Queenstown and Chesapeake City located in the state of Maryland, United States.

Area Code (443) Maryland Counties:

Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil, Dorchester, Harford, Howard, Kent, Prince Georges, Queen Annes, Somerset, Talbot, Wicomico and Worcester.
Area Code 443 List of Prefixes
PrefixLocationCarrier
(443) 200 BaltimoreMDAllegiance Telecom
(443) 201 WestminsterMDCellco Partnership DBA Verizon
(443) 202 BaltimoreMDCellco Partnership DBA Verizon
(443) 203 West RiverMDVerizon Maryland
(443) 204 PikesvilleMDNew Cingular Wireless PCS, LLC
(443) 205 CambridgeMDSprint Spectrum L.P.
(443) 206 PerryvilleMDCellco Partnership DBA Verizon
(443) 207 ElktonMDOmnipoint Communications Enterprises, L.P.
(443) 208 EssexMDSprint Spectrum L.P.
(443) 209 Havre De GraceMDCavalier Telephone (Mid-Atlantic)
(443) 210 AberdeenMDSprint Spectrum L.P.
(443) 212 Sparks GlencoeMDUS LEC of Maryland
(443) 213 BaltimoreMDVerizon Maryland
(443) 214 AnnapolisMDNew Cingular Wireless PCS, LLC
(443) 215 ChestertownMDCore Communications
(443) 216 DundalkMDCavalier Telephone Mid-Atlantic
(443) 217 AnnapolisMDCore Communications
(443) 218 ReisterstownMDGlobal Crossing Local Services - MD
(443) 219 BaltimoreMDLevel 3 Communications
(443) 220 BaltimoreMDVerizon Maryland
(443) 221 AnnapolisMDLevel 3 Communications
(443) 222 ReisterstownMDXO Communications Maryland
(443) 223 AnnapolisMDCellco Partnership DBA Verizon
(443) 224 BaltimoreMDMCI Worldcom Communications
(443) 225 CambridgeMDSprint Spectrum L.P.
(443) 226 BaltimoreMDSprint Spectrum L.P.
(443) 227 Port DepositMDCTC Communications Corp.
(443) 228 Middle RiverMDUS LEC of Maryland
(443) 229 Severna ParkMDCavalier Telephone Mid-Atlantic
(443) 230 OdentonMDCTC Communications Corp.
(443) 231 BaltimoreMDAT&T Local
(443) 232 WillardsMDCavalier Telephone (Mid-Atlantic)
(443) 233 Mardela SpringsMDCavalier Telephone (Mid-Atlantic)
(443) 234 Snow HillMDCavalier Telephone (Mid-Atlantic)
(443) 235 SalisburyMDCellco Partnership DBA Verizon
(443) 236 CardiffMDCore Communications
(443) 237 North BeachMDCore Communications
(443) 238 ParktonMDCTC Communications Corp.
(443) 239 EastonMDNew Cingular Wireless PCS, LLC
(443) 240 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 241 WestminsterMDGlobal Naps South
(443) 242 Sparrows PointMDCavalier Telephone Mid-Atlantic
(443) 243 FallstonMDCellco Partnership DBA Verizon
(443) 244 WestminsterMDLevel 3 Communications
(443) 245 ElktonMDCavalier Telephone (Mid-Atlantic)
(443) 246 ElktonMDCore Communications
(443) 247 Union BridgeMDCTC Communications Corp.
(443) 248 CatonsvilleMDCellco Partnership DBA Verizon
(443) 249 StevensvilleMDVerizon Maryland
(443) 250 BaltimoreMDSprint Spectrum L.P.
(443) 251 ChestertownMDLocal Access LLC
(443) 252 PerryvilleMDCellco Partnership DBA Verizon
(443) 253 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 254 AnnapolisMDOmnipoint Communications Cap Operations
(443) 255 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 256 North EastMDCTC Communications Corp.
(443) 257 BaltimoreMDCellco Partnership DBA Verizon
(443) 258 EastonMDNew Cingular Wireless PCS, LLC
(443) 259 ColumbiaMDVerizon Maryland
(443) 260 SalisburyMDVerizon Maryland
(443) 261 Severna ParkMDMCI Worldcom Communications
(443) 262 CentrevilleMDVerizon Maryland
(443) 263 BaltimoreMDVerizon Maryland
(443) 264 PikesvilleMDXO Communications Maryland
(443) 265 ForkMDCavalier Telephone Mid-Atlantic
(443) 266 GlenwoodMDGlobal Crossing Local Services - MD
(443) 267 DarlingtonMDTeleport Communications America
(443) 268 BaltimoreMDCore Communications
(443) 269 TowsonMDXO Communications Maryland
(443) 270 BaltimoreMDPaetec Communications
(443) 271 BaltimoreMDSprint Spectrum L.P.
(443) 272 BaltimoreMDTeleport Communications America
(443) 273 ReisterstownMDTeleport Communications America
(443) 274 SevernMDVerizon Maryland
(443) 275 BaltimoreMDComcast Phone of Northern Maryland
(443) 276 BaltimoreMDAllegiance Telecom
(443) 277 SykesvilleMDSprint Spectrum L.P.
(443) 278 BaltimoreMDVdl DBA Global Telecom Brokers
(443) 279 BaltimoreMDAllegiance Telecom
(443) 280 SykesvilleMDNew Cingular Wireless PCS, LLC
(443) 281 BaltimoreMDAllegiance Telecom
(443) 282 ChestertownMDSprint Spectrum L.P.
(443) 283 BaltimoreMDPaetec Communications
(443) 284 JessupMDXO Communications Maryland
(443) 285 ColumbiaMDVerizon Maryland
(443) 286 BaltimoreMDCellco Partnership DBA Verizon
(443) 287 BaltimoreMDVerizon Maryland
(443) 288 BaltimoreMDAllegiance Telecom
(443) 289 WestminsterMDMCI Worldcom Communications
(443) 290 ParkvilleMDTW Telecom of Maryland LLC
(443) 291 HampsteadMDGlobal Crossing Local Services - MD
(443) 292 LaurelMDLevel 3 Communications
(443) 293 WestminsterMDGlobal Crossing Local Services - MD
(443) 294 West RiverMDGlobal Crossing Local Services - MD
(443) 295 Prince FrederickMDLevel 3 Communications
(443) 296 BaltimoreMDGlobal Crossing Local Services - MD
(443) 297 ArbutusMDTeleport Communications America
(443) 298 EastonMDNew Cingular Wireless PCS, LLC
(443) 299 FallstonMDGlobal Crossing Local Services - MD
(443) 300 SykesvilleMDBroadwing Communications. LLC
(443) 301 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 302 CroftonMDGlobal Crossing Local Services - MD
(443) 303 AberdeenMDGlobal Crossing Local Services - MD
(443) 304 BaltimoreMDGlobal Crossing Local Services - MD
(443) 305 BaltimoreMDGlobal Crossing Local Services - MD
(443) 306 BaltimoreMDSprint Spectrum L.P.
(443) 307 Bel AirMDGlobal Crossing Local Services - MD
(443) 308 BaltimoreMDAllegiance Telecom
(443) 309 ElktonMDSprint Spectrum L.P.
(443) 310 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 312 BaltimoreMDGlobal Crossing Local Services - MD
(443) 313 ForkMDGlobal Crossing Local Services - MD
(443) 314 BaltimoreMDSprint Spectrum L.P.
(443) 315 BaltimoreMDGlobal Crossing Local Services - MD
(443) 316 BaltimoreMDGlobal Crossing Local Services - MD
(443) 317 BaltimoreMDGlobal Crossing Local Services - MD
(443) 318 CockeysvilleMDCavalier Telephone (Mid-Atlantic)
(443) 319 ColumbiaMDCavalier Telephone (Mid-Atlantic)
(443) 320 BaltimoreMDGlobal Crossing Local Services - MD
(443) 321 AnnapolisMDPaetec Communications
(443) 322 TowsonMDCavalier Telephone Mid-Atlantic
(443) 323 RhodesdaleMDCavalier Telephone (Mid-Atlantic)
(443) 324 BaltimoreMDSprint Spectrum L.P.
(443) 325 Ellicott CityMDCavalier Telephone Mid-Atlantic
(443) 326 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 327 AberdeenMDCavalier Telephone Mid-Atlantic
(443) 328 SykesvilleMDCTC Communications Corp.
(443) 329 JessupMDGlobal Crossing Local Services - MD
(443) 330 BaltimoreMDCavalier Telephone Mid-Atlantic
(443) 331 TaneytownMDCTC Communications Corp.
(443) 332 CroftonMDCavalier Telephone Mid-Atlantic
(443) 333 AnnapolisMDLeap Wireless Intl DBA Cricket Comm
(443) 334 TowsonMDAllegiance Telecom
(443) 335 BrooklynMDXO Communications Maryland
(443) 336 AnnapolisMDSprint Spectrum L.P.
(443) 337 Sparrows PointMDXO Communications Maryland
(443) 338 Sparks GlencoeMDCTC Communications Corp.
(443) 339 Sherwood ForestMDCTC Communications Corp.
(443) 340 WestminsterMDCellco Partnership DBA Verizon
(443) 341 BaltimoreMDLevel 3 Communications
(443) 342 SolomonsMDCTC Communications Corp.
(443) 343 MillersvilleMDTeleport Communications America
(443) 344 Severna ParkMDCore Communications
(443) 345 AberdeenMDLevel 3 Communications
(443) 346 Severna ParkMDXO Communications Maryland
(443) 347 CardiffMDCTC Communications Corp.
(443) 348 BaltimoreMDTeleport Communications America
(443) 349 WestminsterMDCore Communications
(443) 350 ElktonMDCellco Partnership DBA Verizon
(443) 351 ColumbiaMDUS LEC of Maryland
(443) 352 BaltimoreMDAT&T Local
(443) 353 CockeysvilleMDVerizon Maryland
(443) 354 BaltimoreMDLevel 3 Communications
(443) 355 BaltimoreMDLevel 3 Communications
(443) 356 Bel AirMDLevel 3 Communications
(443) 357 PikesvilleMDVerizon Maryland
(443) 358 SalisburyMDYMAX Communications Corp.
(443) 359 DelmarMDCellco Partnership DBA Verizon
(443) 360 AberdeenMDTeleport Communications America
(443) 361 SykesvilleMDCore Communications
(443) 362 EastonMDOmnipoint Communications Cap Operations
(443) 363 SevernMDXO Communications Maryland
(443) 364 BaltimoreMDTeleport Communications America
(443) 365 SalisburyMDOmnipoint Communications Cap Operations
(443) 366 SalisburyMDSprint Spectrum L.P.
(443) 367 ColumbiaMDVerizon Maryland
(443) 368 WestminsterMDCore Communications
(443) 369 Bel AirMDCore Communications
(443) 370 AnnapolisMDNew Cingular Wireless PCS, LLC
(443) 371 Bel AirMDBroadwing Communications. LLC
(443) 372 EdgewoodMDUS LEC of Maryland
(443) 373 Ocean CityMDSprint Spectrum L.P.
(443) 374 AberdeenMDCavalier Telephone (Mid-Atlantic)
(443) 375 HampsteadMDSprint Spectrum L.P.
(443) 376 BaltimoreMDTeleport Communications America
(443) 377 TowsonMDCellco Partnership DBA Verizon
(443) 378 BaltimoreMDSprint Spectrum L.P.
(443) 379 PikesvilleMDComcast Phone of Northern Maryland
(443) 380 BaltimoreMDLevel 3 Communications
(443) 381 ReisterstownMDXO Communications Maryland
(443) 382 CambridgeMDCore Communications
(443) 383 WestminsterMDCTC Communications Corp.
(443) 384 ParkvilleMDCavalier Telephone Mid-Atlantic
(443) 385 EastonMDCore Communications
(443) 386 BaltimoreMDCellco Partnership DBA Verizon
(443) 387 PocomokeMDCore Communications
(443) 388 BaltimoreMDCellco Partnership DBA Verizon
(443) 389 SalisburyMDCore Communications
(443) 390 ChurchvilleMDGlobal Crossing Local Services - MD
(443) 391 BaltimoreMDGlobal Crossing Local Services - MD
(443) 392 BaltimoreMDAT&T Local
(443) 393 BaltimoreMDGlobal Crossing Local Services - MD
(443) 394 PikesvilleMDVerizon Maryland
(443) 395 AberdeenMDVerizon Maryland
(443) 396 OdentonMDGlobal Crossing Local Services - MD
(443) 397 SalisburyMDCellco Partnership DBA Verizon
(443) 398 SykesvilleMDSprint Spectrum L.P.
(443) 399 BaltimoreMDGlobal Crossing Local Services - MD
(443) 400 BaltimoreMDXO Communications Maryland
(443) 401 BaltimoreMDCellco Partnership DBA Verizon
(443) 402 EdgewoodMDTeleport Communications America
(443) 403 AberdeenMDBroadwing Communications. LLC
(443) 404 SolomonsMDSprint Spectrum L.P.
(443) 405 BaltimoreMDGlobal Crossing Local Services - MD
(443) 406 ElktonMDTeleport Communications America
(443) 407 BaltimoreMDAllegiance Telecom
(443) 408 BaltimoreMDXO Communications Maryland
(443) 409 EdgewoodMDCavalier Telephone Mid-Atlantic
(443) 410 BaltimoreMDCenturylink Communications LLC
(443) 412 ChurchvilleMDTeleport Communications America
(443) 413 BaltimoreMDSprint Spectrum L.P.
(443) 414 BaltimoreMDSprint Spectrum L.P.
(443) 415 BaltimoreMDSprint Spectrum L.P.
(443) 416 BaltimoreMDSprint Spectrum L.P.
(443) 417 FallstonMDTeleport Communications America
(443) 418 BaltimoreMDSprint Spectrum L.P.
(443) 419 GlenwoodMDCavalier Telephone Mid-Atlantic
(443) 420 BaltimoreMDGlobal Crossing Local Services - MD
(443) 421 ForkMDNew Cingular Wireless PCS, LLC
(443) 422 Glen BurnieMDLeap Wireless Intl DBA Cricket Comm
(443) 423 BaltimoreMDBroadwing Communications. LLC
(443) 424 CardiffMDTeleport Communications America
(443) 425 BaltimoreMDAT&T Local
(443) 426 BaltimoreMDPaetec Communications
(443) 427 Princess AnneMDCore Communications
(443) 428 CockeysvilleMDCore Communications
(443) 429 WoodlawnMDCavalier Telephone Mid-Atlantic
(443) 430 BaltimoreMDXO Communications Maryland
(443) 431 RandallstownMDXO Communications Maryland
(443) 432 Prince FrederickMDCTC Communications Corp.
(443) 433 AnnapolisMDXO Communications Maryland
(443) 434 FederalsburgMDComcast Phone of Northern Maryland
(443) 435 BaltimoreMDSprint Spectrum L.P.
(443) 436 WoodlawnMDVerizon Maryland
(443) 437 PocomokeMDTeleport Communications America
(443) 438 BaltimoreMDCellco Partnership DBA Verizon
(443) 439 TrappeMDCellco Partnership DBA Verizon
(443) 440 AnnapolisMDVerizon Maryland
(443) 441 GlenwoodMDTeleport Communications America
(443) 442 ParkvilleMDCavalier Telephone Mid-Atlantic
(443) 444 BaltimoreMDVerizon Maryland
(443) 445 ElkridgeMDVerizon Maryland
(443) 446 QueenstownMDMCI Worldcom Communications
(443) 447 BaltimoreMDLeap Wireless Intl DBA Cricket Comm
(443) 448 DentonMDComcast Phone of Northern Maryland
(443) 449 BaltimoreMDBroadview Networks
(443) 450 BaltimoreMDLevel 3 Communications
(443) 451 BaltimoreMDPaetec Communications
(443) 452 BaltimoreMDUS LEC of Maryland
(443) 453 BaltimoreMDNeutral Tandem-maryland
(443) 454 AnnapolisMDOmnipoint Communications Cap Operations
(443) 455 BaltimoreMDVerizon Maryland
(443) 456 EdgewoodMDAT&T Local
(443) 457 BaltimoreMDTeleport Communications America
(443) 458 AnnapolisMDAllegiance Telecom
(443) 459 BaltimoreMDPaetec Communications
(443) 460 BaltimoreMDAllegiance Telecom
(443) 461 ParkvilleMDUS LEC of Maryland
(443) 462 BaltimoreMDCellco Partnership DBA Verizon
(443) 463 BaltimoreMDSprint Spectrum L.P.
(443) 464 ChurchvilleMDBroadview Networks
(443) 465 TowsonMDCellco Partnership DBA Verizon
(443) 466 ElktonMDSprint Spectrum L.P.
(443) 467 BaltimoreMDLeap Wireless Intl DBA Cricket Comm
(443) 468 BaltimoreMDSprint Spectrum L.P.
(443) 469 BaltimoreMDLeap Wireless Intl DBA Cricket Comm
(443) 470 TowsonMDUS LEC of Maryland
(443) 471 ColumbiaMDUS LEC of Maryland
(443) 472 BaltimoreMDLevel 3 Communications
(443) 473 BaltimoreMDSprint Spectrum L.P.
(443) 474 CatonsvilleMDNew Cingular Wireless PCS, LLC
(443) 475 BaltimoreMDMCI Worldcom Communications
(443) 476 AnnapolisMDVerizon Maryland
(443) 477 CambridgeMDCellco Partnership DBA Verizon
(443) 478 BaltimoreMDCellco Partnership DBA Verizon
(443) 479 LaurelMDVerizon Maryland
(443) 480 ChestertownMDCellco Partnership DBA Verizon
(443) 481 AnnapolisMDUS LEC of Maryland
(443) 482 AnnapolisMDVerizon Maryland
(443) 483 CardiffMDBroadwing Communications. LLC
(443) 484 EdgewoodMDBroadwing Communications. LLC
(443) 485 ElktonMDBroadwing Communications. LLC
(443) 486 Prince FrederickMDBroadwing Communications. LLC
(443) 487 WestminsterMDBroadwing Communications. LLC
(443) 488 BaltimoreMDLeap Wireless Intl DBA Cricket Comm
(443) 489 BaltimoreMDTeleport Communications America
(443) 490 EdgewoodMDGlobal Crossing Local Services - MD
(443) 491 ParktonMDGlobal Crossing Local Services - MD
(443) 492 BaltimoreMDGlobal Crossing Local Services - MD
(443) 493 DelmarMDCellco Partnership DBA Verizon
(443) 494 MillersvilleMDGlobal Crossing Local Services - MD
(443) 495 BaltimoreMDGlobal Crossing Local Services - MD
(443) 496 EastonMDSprint Spectrum L.P.
(443) 497 SalisburyMDSprint Spectrum L.P.
(443) 498 BaltimoreMDAllegiance Telecom
(443) 499 JarrettsvilleMDGlobal Crossing Local Services - MD
(443) 500 BaltimoreMDLeap Wireless Intl DBA Cricket Comm
(443) 501 BaltimoreMDGlobal Crossing Local Services - MD
(443) 502 Havre De GraceMDTeleport Communications America
(443) 503 BaltimoreMDXO Communications Maryland
(443) 504 FallstonMDCavalier Telephone Mid-Atlantic
(443) 505 BaltimoreMDGlobal Crossing Local Services - MD
(443) 506 BaltimoreMDSprint Spectrum L.P.
(443) 507 HampsteadMDTeleport Communications America
(443) 508 HampsteadMDCavalier Telephone Mid-Atlantic
(443) 509 BaltimoreMDCellco Partnership DBA Verizon
(443) 510 AnnapolisMDCellco Partnership DBA Verizon
(443) 512 EdgewoodMDVerizon Maryland
(443) 513 BerlinMDNew Cingular Wireless PCS, LLC
(443) 514 ColumbiaMDUS LEC of Maryland
(443) 515 CambridgeMDCellco Partnership DBA Verizon
(443) 516 SykesvilleMDGlobal Crossing Local Services - MD
(443) 517 BaltimoreMDGlobal Crossing Local Services - MD
(443) 518 ColumbiaMDVerizon Maryland
(443) 519 BaltimoreMDGlobal Crossing Local Services - MD
(443) 520 CatonsvilleMDNew Cingular Wireless PCS, LLC
(443) 521 CambridgeMDCellco Partnership DBA Verizon
(443) 522 ReisterstownMDPaetec Communications
(443) 523 SalisburyMDVerizon Maryland
(443) 524 BaltimoreMDAllegiance Telecom
(443) 525 BaltimoreMDLeap Wireless Intl DBA Cricket Comm
(443) 526 Havre De GraceMDCTC Communications Corp.
(443) 527 BaltimoreMDOmnipoint Communications Cap Operations
(443) 528 Bel AirMDSprint Spectrum L.P.
(443) 529 BaltimoreMDOmnipoint Communications Cap Operations
(443) 530 BaltimoreMDPaetec Communications
(443) 531 BaltimoreMDLeap Wireless Intl DBA Cricket Comm
(443) 532 Prince FrederickMDSprint Spectrum L.P.
(443) 533 JarrettsvilleMDTeleport Communications America
(443) 534 AnnapolisMDCellco Partnership DBA Verizon
(443) 535 ColumbiaMDVerizon Maryland
(443) 536 WestminsterMDSprint Spectrum L.P.
(443) 537 ColumbiaMDVerizon Maryland
(443) 538 ColumbiaMDOmnipoint Communications Cap Operations
(443) 539 ColumbiaMDUS LEC of Maryland
(443) 540 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 541 BaltimoreMDPaetec Communications
(443) 542 ColumbiaMDComcast Phone of Northern Maryland
(443) 543 ArbutusMDVerizon Maryland
(443) 544 PikesvilleMDCavalier Telephone Mid-Atlantic
(443) 545 ColumbiaMDBroadwing Communications. LLC
(443) 546 BaltimoreMDVerizon Maryland
(443) 547 WestminsterMDCellco Partnership DBA Verizon
(443) 548 BaltimoreMDAllegiance Telecom
(443) 549 DundalkMDUS LEC of Maryland
(443) 550 North BeachMDLevel 3 Communications
(443) 551 BaltimoreMDLevel 3 Communications
(443) 552 BaltimoreMDVerizon Maryland
(443) 553 ElktonMDCellco Partnership DBA Verizon
(443) 554 Middle RiverMDOmnipoint Communications Cap Operations
(443) 556 CockeysvilleMDVerizon Maryland
(443) 557 BaltimoreMDAllegiance Telecom
(443) 558 AberdeenMDXO Communications Maryland
(443) 559 EssexMDComcast Phone of Northern Maryland
(443) 560 BaltimoreMDSprint Spectrum L.P.
(443) 561 ColumbiaMDUS LEC of Maryland
(443) 562 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 563 BaltimoreMDSprint Spectrum L.P.
(443) 564 BaltimoreMDLevel 3 Communications
(443) 565 RandallstownMDCavalier Telephone Mid-Atlantic
(443) 566 Chesapeake CityMDCellco Partnership DBA Verizon
(443) 567 Bel AirMDLevel 3 Communications
(443) 568 ArbutusMDAllegiance Telecom
(443) 569 AnnapolisMDLevel 3 Communications
(443) 570 BaltimoreMDOmnipoint Communications Cap Operations
(443) 571 BaltimoreMDCellco Partnership DBA Verizon
(443) 572 Glen BurnieMDVerizon Maryland
(443) 573 ColumbiaMDUS LEC of Maryland
(443) 574 Ellicott CityMDUS LEC of Maryland
(443) 575 ArbutusMDCavalier Telephone Mid-Atlantic
(443) 576 BaltimoreMDAllegiance Telecom
(443) 577 ColumbiaMDUS LEC of Maryland
(443) 578 BaltimoreMDXO Communications Maryland
(443) 579 EssexMDUS LEC of Maryland
(443) 580 BaltimoreMDSprint Spectrum L.P.
(443) 581 Middle RiverMDXO Communications Maryland
(443) 582 ChurchvilleMDCTC Communications Corp.
(443) 583 ColumbiaMDCTC Communications Corp.
(443) 584 CroftonMDCTC Communications Corp.
(443) 585 DarlingtonMDCTC Communications Corp.
(443) 586 DundalkMDXO Communications Maryland
(443) 587 EdgewoodMDCTC Communications Corp.
(443) 588 BaltimoreMDAllegiance Telecom
(443) 589 CockeysvilleMDUS LEC of Maryland
(443) 590 ReisterstownMDGlobal Crossing Local Services - MD
(443) 591 Glen BurnieMDCellco Partnership DBA Verizon
(443) 592 ElkridgeMDXO Communications Maryland
(443) 593 ElktonMDCTC Communications Corp.
(443) 594 BaltimoreMDGlobal Crossing Local Services - MD
(443) 595 Sparks GlencoeMDGlobal Crossing Local Services - MD
(443) 596 EssexMDXO Communications Maryland
(443) 597 Severna ParkMDGlobal Crossing Local Services - MD
(443) 598 Sherwood ForestMDGlobal Crossing Local Services - MD
(443) 599 BaltimoreMDGlobal Crossing Local Services - MD
(443) 600 EssexMDOmnipoint Communications Cap Operations
(443) 601 FallstonMDCTC Communications Corp.
(443) 602 CatonsvilleMDCellco Partnership DBA Verizon
(443) 603 AnnapolisMDPaetec Communications
(443) 604 BaltimoreMDCellco Partnership DBA Verizon
(443) 605 WestminsterMDCavalier Telephone Mid-Atlantic
(443) 606 ForkMDCTC Communications Corp.
(443) 607 West RiverMDCavalier Telephone Mid-Atlantic
(443) 608 TowsonMDLeap Wireless Intl DBA Cricket Comm
(443) 609 SykesvilleMDCavalier Telephone Mid-Atlantic
(443) 610 BaltimoreMDCellco Partnership DBA Verizon
(443) 612 CatonsvilleMDVerizon Maryland
(443) 613 TowsonMDLeap Wireless Intl DBA Cricket Comm
(443) 614 SalisburyMDCellco Partnership DBA Verizon
(443) 615 CatonsvilleMDCellco Partnership DBA Verizon
(443) 616 Bel AirMDCavalier Telephone Mid-Atlantic
(443) 617 FallstonMDCellco Partnership DBA Verizon
(443) 618 Glen BurnieMDCellco Partnership DBA Verizon
(443) 619 Bel AirMDCellco Partnership DBA Verizon
(443) 620 BaltimoreMDTeleport Communications America
(443) 621 BaltimoreMDSprint Spectrum L.P.
(443) 622 BaltimoreMDSprint Spectrum L.P.
(443) 623 Glen BurnieMDSprint Spectrum L.P.
(443) 624 Prince FrederickMDCellco Partnership DBA Verizon
(443) 625 ForkMDBroadwing Communications. LLC
(443) 626 Middle RiverMDCavalier Telephone Mid-Atlantic
(443) 627 BaltimoreMDVerizon Maryland
(443) 628 Glen BurnieMDXO Communications Maryland
(443) 629 BaltimoreMDSprint Spectrum L.P.
(443) 630 BaltimoreMDCellco Partnership DBA Verizon
(443) 631 CatonsvilleMDNew Cingular Wireless PCS, LLC
(443) 632 TowsonMDUS LEC of Maryland
(443) 633 BaltimoreMDSprint Spectrum L.P.
(443) 634 OdentonMDVerizon Maryland
(443) 635 BaltimoreMDLeap Wireless Intl DBA Cricket Comm
(443) 636 CatonsvilleMDOmnipoint Communications Cap Operations
(443) 637 BaltimoreMDXO Communications Maryland
(443) 638 Ellicott CityMDGlobal Naps South
(443) 639 HampsteadMDCTC Communications Corp.
(443) 640 Bel AirMDUS LEC of Maryland
(443) 641 PikesvilleMDBroadwing Communications. LLC
(443) 642 BaltimoreMDCellco Partnership DBA Verizon
(443) 643 Bel AirMDVerizon Maryland
(443) 644 JarrettsvilleMDCTC Communications Corp.
(443) 645 MillersvilleMDCTC Communications Corp.
(443) 646 North BeachMDCTC Communications Corp.
(443) 647 New WindsorMDCTC Communications Corp.
(443) 648 BaltimoreMDTeleport Communications America
(443) 649 Sparrows PointMDUS LEC of Maryland
(443) 650 ReisterstownMDAllegiance Telecom
(443) 651 BaltimoreMDCellco Partnership DBA Verizon
(443) 652 TowsonMDVerizon Maryland
(443) 653 BaltimoreMDOmnipoint Communications Cap Operations
(443) 654 JessupMDVerizon Maryland
(443) 655 Bel AirMDNew Cingular Wireless PCS, LLC
(443) 656 ColumbiaMDCavalier Telephone Mid-Atlantic
(443) 657 RandallstownMDTW Telecom of Maryland LLC
(443) 658 WoodlawnMDGlobal Naps South
(443) 659 West RiverMDGlobal Naps South
(443) 660 BaltimoreMDComcast Phone of Northern Maryland
(443) 661 JessupMDCavalier Telephone Mid-Atlantic
(443) 662 Sparks GlencoeMDCavalier Telephone Mid-Atlantic
(443) 663 WoodlawnMDVerizon Maryland
(443) 664 Ocean CityMDCavalier Telephone (Mid-Atlantic)
(443) 665 NanticokeMDCavalier Telephone (Mid-Atlantic)
(443) 666 ChestertownMDLevel 3 Communications
(443) 668 CatonsvilleMDNew Cingular Wireless PCS, LLC
(443) 669 DelmarMDCavalier Telephone (Mid-Atlantic)
(443) 670 CatonsvilleMDCavalier Telephone Mid-Atlantic
(443) 671 New WindsorMDTeleport Communications America
(443) 672 ParktonMDTeleport Communications America
(443) 673 BrooklynMDCavalier Telephone Mid-Atlantic
(443) 674 North EastMDTeleport Communications America
(443) 675 RandallstownMDCavalier Telephone (Mid-Atlantic)
(443) 676 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 677 BaltimoreMDSprint Spectrum L.P.
(443) 678 ParkvilleMDVerizon Maryland
(443) 679 BaltimoreMDTeleport Communications America
(443) 680 BaltimoreMDSprint Spectrum L.P.
(443) 681 BaltimoreMDCellco Partnership DBA Verizon
(443) 682 BaltimoreMDCellco Partnership DBA Verizon
(443) 683 BaltimoreMDCellco Partnership DBA Verizon
(443) 684 Prince FrederickMDCellco Partnership DBA Verizon
(443) 685 SevernMDCavalier Telephone (Mid-Atlantic)
(443) 686 FallstonMDSprint Spectrum L.P.
(443) 687 BaltimoreMDCellco Partnership DBA Verizon
(443) 688 SevernMDCavalier Telephone Mid-Atlantic
(443) 689 CockeysvilleMDCavalier Telephone Mid-Atlantic
(443) 690 BaltimoreMDCellco Partnership DBA Verizon
(443) 691 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 692 BaltimoreMDAllegiance Telecom
(443) 693 PerryvilleMDTeleport Communications America
(443) 694 Severna ParkMDSprint Spectrum L.P.
(443) 695 BaltimoreMDCellco Partnership DBA Verizon
(443) 696 DundalkMDCavalier Telephone Mid-Atlantic
(443) 697 CatonsvilleMDGlobal Naps South
(443) 698 OdentonMDTeleport Communications America
(443) 699 AnnapolisMDCellco Partnership DBA Verizon
(443) 701 ArbutusMDXO Communications Maryland
(443) 702 PasadenaMDCavalier Telephone Mid-Atlantic
(443) 703 BaltimoreMDXO Communications Maryland
(443) 704 OdentonMDCavalier Telephone Mid-Atlantic
(443) 705 CockeysvilleMDXO Communications Maryland
(443) 706 CrisfieldMDCavalier Telephone (Mid-Atlantic)
(443) 708 BaltimoreMDTW Telecom of Maryland LLC
(443) 709 ArbutusMDCavalier Telephone Mid-Atlantic
(443) 710 BaltimoreMDXO Communications Maryland
(443) 712 ReisterstownMDCavalier Telephone Mid-Atlantic
(443) 713 ColumbiaMDPeerless Network of Maryland
(443) 714 ColumbiaMDSprint Spectrum L.P.
(443) 715 North EastMDCavalier Telephone (Mid-Atlantic)
(443) 716 AnnapolisMDCavalier Telephone Mid-Atlantic
(443) 717 BaltimoreMDCellco Partnership DBA Verizon
(443) 718 ColumbiaMDUS LEC of Maryland
(443) 719 JarrettsvilleMDCavalier Telephone Mid-Atlantic
(443) 720 ElktonMDXO Communications Maryland
(443) 721 BaltimoreMDCellco Partnership DBA Verizon
(443) 722 BaltimoreMDOmnipoint Communications Cap Operations
(443) 723 BrooklynMDSprint Spectrum L.P.
(443) 724 EastonMDCavalier Telephone (Mid-Atlantic)
(443) 725 BaltimoreMDPaetec Communications
(443) 726 TowsonMDSprint Spectrum L.P.
(443) 727 BishopvilleMDCavalier Telephone (Mid-Atlantic)
(443) 728 BerlinMDCavalier Telephone (Mid-Atlantic)
(443) 729 BaltimoreMDPaetec Communications
(443) 730 BaltimoreMDPaetec Communications
(443) 731 Port DepositMDTeleport Communications America
(443) 732 WestminsterMDTeleport Communications America
(443) 733 BaltimoreMDAT&T Local
(443) 734 SevernMDVerizon Maryland
(443) 735 SalisburyMDNew Cingular Wireless PCS, LLC
(443) 736 SalisburyMDNew Cingular Wireless PCS, LLC
(443) 737 BaltimoreMDPaetec Communications
(443) 738 BaltimoreMDPaetec Communications
(443) 739 BaltimoreMDOmnipoint Communications Cap Operations
(443) 740 BaltimoreMDTelcove Operations
(443) 741 ColumbiaMDMCI Worldcom Communications
(443) 742 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 743 BaltimoreMDCellco Partnership DBA Verizon
(443) 744 ReisterstownMDSprint Spectrum L.P.
(443) 745 ColumbiaMDCellco Partnership DBA Verizon
(443) 746 EastonMDLevel 3 Communications
(443) 747 Port DepositMDCore Communications
(443) 748 MillersvilleMDCavalier Telephone Mid-Atlantic
(443) 749 BaltimoreMDCavalier Telephone Mid-Atlantic
(443) 750 BaltimoreMDCellco Partnership DBA Verizon
(443) 751 WoodlawnMDCavalier Telephone Mid-Atlantic
(443) 752 Bel AirMDCellco Partnership DBA Verizon
(443) 753 JessupMDAllegiance Telecom
(443) 754 SalisburyMDCellco Partnership DBA Verizon
(443) 755 ElkridgeMDVerizon Maryland
(443) 756 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 757 ElkridgeMDCavalier Telephone Mid-Atlantic
(443) 758 AnnapolisMDAT&T Local
(443) 759 BaltimoreMDCellco Partnership DBA Verizon
(443) 760 AberdeenMDAT&T Local
(443) 761 TowsonMDOmnipoint Communications Cap Operations
(443) 762 BaltimoreMDSprint Spectrum L.P.
(443) 763 BaltimoreMDOmnipoint Communications Cap Operations
(443) 764 Glen BurnieMDOmnipoint Communications Cap Operations
(443) 765 CatonsvilleMDNew Cingular Wireless PCS, LLC
(443) 766 ColumbiaMDUS LEC of Maryland
(443) 767 ReisterstownMDCavalier Telephone Mid-Atlantic
(443) 768 BaltimoreMDSprint Spectrum L.P.
(443) 769 BaltimoreMDOmnipoint Communications Cap Operations
(443) 770 PasadenaMDVerizon Maryland
(443) 771 Prince FrederickMDCellco Partnership DBA Verizon
(443) 772 EssexMDCavalier Telephone Mid-Atlantic
(443) 773 BaltimoreMDAllegiance Telecom
(443) 774 BaltimoreMDGlobal Naps South
(443) 776 BaltimoreMDBandwidth.com - CLEC
(443) 777 EssexMDVerizon Maryland
(443) 778 LaurelMDVerizon Maryland
(443) 779 AberdeenMDXO Communications Maryland
(443) 780 ColumbiaMDUS LEC of Maryland
(443) 781 PasadenaMDXO Communications Maryland
(443) 782 AnnapolisMDXO Communications Maryland
(443) 783 SalisburyMDCellco Partnership DBA Verizon
(443) 784 BaltimoreMDTeleport Communications America
(443) 785 ArbutusMDGlobal Naps South
(443) 786 EastonMDCellco Partnership DBA Verizon
(443) 787 Bel AirMDCTC Communications Corp.
(443) 788 AberdeenMDXO Communications Maryland
(443) 789 WestminsterMDNew Cingular Wireless PCS, LLC
(443) 790 Glen BurnieMDSprint Spectrum L.P.
(443) 791 TowsonMDNew Cingular Wireless PCS, LLC
(443) 792 BrooklynMDVerizon Maryland
(443) 793 BaltimoreMDXO Communications Maryland
(443) 794 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 795 BaltimoreMDXO Communications Maryland
(443) 796 BaltimoreMDXO Communications Maryland
(443) 797 BaltimoreMDXO Communications Maryland
(443) 798 TowsonMDTW Telecom of Maryland LLC
(443) 799 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 800 BaltimoreMDSprint Spectrum L.P.
(443) 801 BaltimoreMDSprint Spectrum L.P.
(443) 802 BaltimoreMDSprint Spectrum L.P.
(443) 803 BaltimoreMDSprint Spectrum L.P.
(443) 804 BaltimoreMDSprint Spectrum L.P.
(443) 805 Glen BurnieMDOmnipoint Communications Cap Operations
(443) 806 BaltimoreMDSprint Spectrum L.P.
(443) 807 FallstonMDSprint Spectrum L.P.
(443) 808 AnnapolisMDBandwidth.com - CLEC
(443) 810 BaltimoreMDSprint Spectrum L.P.
(443) 812 ColumbiaMDCellco Partnership DBA Verizon
(443) 813 BaltimoreMDCellco Partnership DBA Verizon
(443) 814 BaltimoreMDCellco Partnership DBA Verizon
(443) 815 BaltimoreMDXO Communications Maryland
(443) 816 Severna ParkMDAllegiance Telecom
(443) 817 BaltimoreMDAllegiance Telecom
(443) 818 PasadenaMDLevel 3 Communications
(443) 820 BaltimoreMDPaetec Communications
(443) 821 WestminsterMDSprint Spectrum L.P.
(443) 822 AnnapolisMDSprint Spectrum L.P.
(443) 823 TowsonMDCellco Partnership DBA Verizon
(443) 824 TowsonMDOmnipoint Communications Cap Operations
(443) 825 BaltimoreMDOmnipoint Communications Cap Operations
(443) 826 BaltimoreMDCellco Partnership DBA Verizon
(443) 827 BaltimoreMDCellco Partnership DBA Verizon
(443) 828 Ellicott CityMDCavalier Telephone Mid-Atlantic
(443) 829 BaltimoreMDSprint Spectrum L.P.
(443) 830 CatonsvilleMDCavalier Telephone Mid-Atlantic
(443) 831 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 832 BaltimoreMDLevel 3 Communications
(443) 833 ArbutusMDUS LEC of Maryland
(443) 834 TowsonMDCavalier Telephone Mid-Atlantic
(443) 835 BaltimoreMDCellco Partnership DBA Verizon
(443) 836 BaltimoreMDXO Communications Maryland
(443) 837 AnnapolisMDUS LEC of Maryland
(443) 838 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 839 BaltimoreMDOmnipoint Communications Cap Operations
(443) 840 CatonsvilleMDNew Cingular Wireless PCS, LLC
(443) 841 BaltimoreMDVerizon Maryland
(443) 842 BaltimoreMDCellco Partnership DBA Verizon
(443) 843 Havre De GraceMDVerizon Maryland
(443) 844 BaltimoreMDCellco Partnership DBA Verizon
(443) 845 BaltimoreMDCellco Partnership DBA Verizon
(443) 846 TowsonMDNew Cingular Wireless PCS, LLC
(443) 847 TowsonMDCellco Partnership DBA Verizon
(443) 848 BaltimoreMDSprint Spectrum L.P.
(443) 849 TowsonMDVerizon Maryland
(443) 850 BaltimoreMDOmnipoint Communications Cap Operations
(443) 851 CatonsvilleMDOmnipoint Communications Cap Operations
(443) 852 AnnapolisMDNew Cingular Wireless PCS, LLC
(443) 853 BaltimoreMDCellco Partnership DBA Verizon
(443) 854 BaltimoreMDOmnipoint Communications Cap Operations
(443) 855 AberdeenMDLightwave Communications
(443) 856 Ocean CityMDCore Communications
(443) 857 BaltimoreMDOmnipoint Communications Cap Operations
(443) 858 BaltimoreMDOmnipoint Communications Cap Operations
(443) 859 SalisburyMDOmnipoint Communications Cap Operations
(443) 860 CatonsvilleMDNew Cingular Wireless PCS, LLC
(443) 861 AberdeenMDVerizon Maryland
(443) 862 TowsonMDCellco Partnership DBA Verizon
(443) 863 BaltimoreMDCellco Partnership DBA Verizon
(443) 864 ColumbiaMDSprint Spectrum L.P.
(443) 865 BaltimoreMDSprint Spectrum L.P.
(443) 866 Bel AirMDSprint Spectrum L.P.
(443) 867 Glen BurnieMDPaetec Communications
(443) 868 BaltimoreMDVerizon Maryland
(443) 869 BaltimoreMDCellco Partnership DBA Verizon
(443) 870 PikesvilleMDTW Telecom of Maryland LLC
(443) 871 AnnapolisMDSprint Spectrum L.P.
(443) 872 BaltimoreMDCavalier Telephone Mid-Atlantic
(443) 873 PikesvilleMDBroadvox - CLEC
(443) 874 BaltimoreMDCavalier Telephone Mid-Atlantic
(443) 875 AnnapolisMDNew Cingular Wireless PCS, LLC
(443) 876 Bel AirMDSprint Spectrum L.P.
(443) 877 North EastMDLevel 3 Communications
(443) 878 BaltimoreMDCellco Partnership DBA Verizon
(443) 879 BaltimoreMDVerizon Maryland
(443) 880 SalisburyMDAT&T Local
(443) 881 ReisterstownMDSprint Spectrum L.P.
(443) 882 BaltimoreMDSprint Spectrum L.P.
(443) 883 BaltimoreMDAT&T Local
(443) 884 BaltimoreMDCavalier Telephone Mid-Atlantic
(443) 885 BaltimoreMDVerizon Maryland
(443) 886 BaltimoreMDAT&T Local
(443) 887 HarmansMDCavalier Telephone Mid-Atlantic
(443) 888 Princess AnneMDCavalier Telephone (Mid-Atlantic)
(443) 889 Glen BurnieMDOmnipoint Communications Cap Operations
(443) 890 BaltimoreMDCellco Partnership DBA Verizon
(443) 891 BaltimoreMDXO Communications Maryland
(443) 892 New WindsorMDBandwidth.com - CLEC
(443) 893 BaltimoreMDXO Communications Maryland
(443) 894 BaltimoreMDSprint Spectrum L.P.
(443) 895 TowsonMDCellco Partnership DBA Verizon
(443) 896 BaltimoreMDAT&T Local
(443) 897 BaltimoreMDLeap Wireless Intl DBA Cricket Comm
(443) 898 PikesvilleMDLevel 3 Communications
(443) 899 ElkridgeMDBroadwing Communications. LLC
(443) 900 TowsonMDCellco Partnership DBA Verizon
(443) 901 TowsonMDCavalier Telephone Mid-Atlantic
(443) 902 BaltimoreMDCellco Partnership DBA Verizon
(443) 903 Bel AirMDCellco Partnership DBA Verizon
(443) 904 BaltimoreMDCellco Partnership DBA Verizon
(443) 905 AnnapolisMDSprint Spectrum L.P.
(443) 906 Severna ParkMDPeerless Network of Maryland
(443) 907 ElktonMDCellco Partnership DBA Verizon
(443) 908 BaltimoreMDCellco Partnership DBA Verizon
(443) 909 BaltimoreMDCellco Partnership DBA Verizon
(443) 910 Bel AirMDNew Cingular Wireless PCS, LLC
(443) 912 TowsonMDCore Communications
(443) 913 BaltimoreMDSprint Spectrum L.P.
(443) 914 ReisterstownMDTeleport Communications America
(443) 915 BaltimoreMDCellco Partnership DBA Verizon
(443) 916 BaltimoreMDSprint Spectrum L.P.
(443) 917 ColumbiaMDBroadvox - CLEC
(443) 918 TaneytownMDTeleport Communications America
(443) 919 BaltimoreMDCavalier Telephone Mid-Atlantic
(443) 920 SykesvilleMDTeleport Communications America
(443) 921 BaltimoreMDPaetec Communications
(443) 922 EdgewoodMDAtx Telecommunications Services, LTD
(443) 923 BaltimoreMDCavalier Telephone Mid-Atlantic
(443) 924 AnnapolisMDCellco Partnership DBA Verizon
(443) 925 BaltimoreMDOmnipoint Communications Cap Operations
(443) 926 AnnapolisMDBroadwing Communications. LLC
(443) 927 BaltimoreMDBroadwing Communications. LLC
(443) 928 BaltimoreMDCellco Partnership DBA Verizon
(443) 929 PikesvilleMDOmnipoint Communications Cap Operations
(443) 930 BaltimoreMDCellco Partnership DBA Verizon
(443) 931 BaltimoreMDMCI Worldcom Communications
(443) 932 BaltimoreMDSprint Spectrum L.P.
(443) 933 CockeysvilleMDTeleport Communications America
(443) 934 BaltimoreMDCellco Partnership DBA Verizon
(443) 935 TowsonMDNew Cingular Wireless PCS, LLC
(443) 937 Union BridgeMDTeleport Communications America
(443) 938 BaltimoreMDCellco Partnership DBA Verizon
(443) 939 BaltimoreMDOmnipoint Communications Cap Operations
(443) 940 PikesvilleMDCavalier Telephone Mid-Atlantic
(443) 941 ElktonMDNew Cingular Wireless PCS, LLC
(443) 942 Severna ParkMDTeleport Communications America
(443) 943 BaltimoreMDTeleport Communications America
(443) 944 SalisburyMDComcast Phone of Northern Maryland
(443) 945 ElktonMDNew Cingular Wireless PCS, LLC
(443) 946 ParkvilleMDXO Communications Maryland
(443) 947 PerryvilleMDCTC Communications Corp.
(443) 948 BaltimoreMDSprint Spectrum L.P.
(443) 949 AnnapolisMDComcast Phone of Northern Maryland
(443) 951 AnnapolisMDGlobal Crossing Local Services - MD
(443) 952 WestminsterMDCellco Partnership DBA Verizon
(443) 953 SalisburyMDCellco Partnership DBA Verizon
(443) 954 BaltimoreMDPaetec Communications
(443) 955 BaltimoreMDCellco Partnership DBA Verizon
(443) 956 BaltimoreMDNew Cingular Wireless PCS, LLC
(443) 957 BaltimoreMDAT&T Local
(443) 960 Glen BurnieMDCellco Partnership DBA Verizon
(443) 962 Glen BurnieMDCellco Partnership DBA Verizon
(443) 963 BaltimoreMDHalo Wireless Services
(443) 964 North BeachMDLevel 3 Communications
(443) 965 BaltimoreMDSprint Spectrum L.P.
(443) 966 FallstonMDCellco Partnership DBA Verizon
(443) 967 North EastMDVerizon Maryland
(443) 968 Prince FrederickMDNew Cingular Wireless PCS, LLC
(443) 969 EssexMDCavalier Telephone Mid-Atlantic
(443) 970 BaltimoreMDCellco Partnership DBA Verizon
(443) 971 TaneytownMDBandwidth.com - CLEC
(443) 972 CambridgeMDUS LEC of Maryland
(443) 973 BaltimoreMDXO Communications Maryland
(443) 974 WestminsterMDTeleport Communications America
(443) 975 Prince FrederickMDNew Cingular Wireless PCS, LLC
(443) 977 BaltimoreMDCellco Partnership DBA Verizon
(443) 978 SalisburyMDCellco Partnership DBA Verizon
(443) 979 ColumbiaMDCellco Partnership DBA Verizon
(443) 980 CatonsvilleMDNew Cingular Wireless PCS, LLC
(443) 981 FallstonMDCellco Partnership DBA Verizon
(443) 982 BaltimoreMDYMAX Communications Corp.
(443) 983 BaltimoreMDOmnipoint Communications Cap Operations
(443) 984 BaltimoreMDVerizon Maryland
(443) 985 RandallstownMDOmnipoint Communications Cap Operations
(443) 986 BaltimoreMDCellco Partnership DBA Verizon
(443) 987 Bel AirMDAT&T Local
(443) 988 CentrevilleMDLevel 3 Communications
(443) 989 Glen BurnieMDCavalier Telephone Mid-Atlantic
(443) 990 BaltimoreMDBandwidth.com - CLEC
(443) 991 TowsonMDCellco Partnership DBA Verizon
(443) 992 BaltimoreMDLevel 3 Communications
(443) 993 ElktonMDMetro PCS
(443) 994 AnnapolisMDNew Cingular Wireless PCS, LLC
(443) 995 AnnapolisMDNew Cingular Wireless PCS, LLC
(443) 996 CatonsvilleMDNew Cingular Wireless PCS, LLC
(443) 997 BaltimoreMDVerizon Maryland
(443) 998 ParkvilleMDVerizon Maryland