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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-402 A Edgewood MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-403 A Aberdeen MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-404 A Solomons MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-405 A Randallstown MD   318J COMCAST IP PHONE, LLC 238      
443-406 A Elkton MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-407 A Dundalk MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 A Sparrows Point MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-409 A Edgewood MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-410 A Glen Burnie MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238      
443-412 A Churchville MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-413 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-414 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-415 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-416 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-417 A Fallston MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-418 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-419 A Glenwood MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-420 A Ellicott City MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-421 A Fork MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-422 A Glen Burnie MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-423 A Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-424 A Cardiff MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-425 A Parkville MD BLTMMDCHCMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-426 A Randallstown MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-427 A Princess Anne MD SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242      
443-428 A Cockeysville MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-429 A Woodlawn MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-430 A Columbia MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-431 A Randallstown MD BLTQMD01BMD  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-432 A Prince Frederick MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-433 A Annapolis MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-434 A Federalsburg MD SLBRMDSBWMD  073H TELNYX LLC 242      
443-435 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2024-02-09   
443-436 A Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-437 A Pocomoke MD SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242      
443-438 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-439 A Trappe MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-440 A Annapolis MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-441 A Glenwood MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-442 A Parkville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-443 A Arbutus MD BLTQMD013MD  939H COMMIO, LLC 238   2024-01-22   
443-444 A Baltimore MD BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
443-445 A Elkridge MD EKRGMDELDS0  9212 VERIZON MARYLAND, INC. 238      
443-446 A Queenstown MD ESTNMDES5MD  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
443-447 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-448 A Denton MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242      
443-449 A Baltimore MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-450 A Pikesville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-451 A Baltimore MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-452 A Baltimore MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-453 A Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-454 A Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-455 A Baltimore MD BLTMMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-456 A Edgewood MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-457 A Brooklyn Park-Linthicum MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-458 A Annapolis MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-459 A Elkridge MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-460 A Essex MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-461 A Parkville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-462 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-463 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-464 A Churchville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-465 A Towson MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-466 A Elkton MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-467 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-468 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-469 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-470 A Towson MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-471 A Pikesville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-472 A Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-473 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-474 A Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-475 A Baltimore MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-476 A Annapolis MD ANNPMDANDS0  9212 VERIZON MARYLAND, INC. 238      
443-477 A Cambridge MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-478 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-479 A Waterloo (Washington DC LATA) MD LARLMDDYDS0  9212 VERIZON MARYLAND, INC. 236      
443-480 A Chestertown MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-481 A Annapolis MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-482 A Annapolis MD ANNPMDANDS0  9212 VERIZON MARYLAND, INC. 238      
443-483 A Cardiff MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-484 A Edgewood MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-485 A Elkton MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-486 A Prince Frederick MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-487 A Westminster MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-488 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-489 A Chase MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-490 A Edgewood MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-491 A Parkton MD   876D ONVOY, LLC - MD 238      
443-492 A Elkridge MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-493 A Delmar MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-494 A Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-495 A Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-496 A Easton MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-497 A Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-498 A Catonsville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-499 A Jarrettsville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-500 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-501 A Pikesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-502 A Havre de Grace MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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