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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-531 9 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-23   
443-532 A Prince Frederick MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-532 0 Prince Frederick MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-532 1 Prince Frederick MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-532 2 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2016-05-06   
443-532 3 Prince Frederick MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2007-04-15   
443-532 4 Prince Frederick MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-532 5 Prince Frederick MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-532 6 Prince Frederick MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-532 7 Prince Frederick MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-532 8 Prince Frederick MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-532 9 Prince Frederick MD   515J IP HORIZON LLC 238   2016-01-04   
443-533 A Jarrettsville MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-533 0 Jarrettsville MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-533 1 Jarrettsville MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238   2003-03-02   
443-533 2 Jarrettsville MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2010-05-18   
443-533 3 Jarrettsville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-10-08   
443-533 4 Jarrettsville MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-533 5 Jarrettsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
443-533 6 Jarrettsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
443-533 7 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-22   
443-533 8 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-22   
443-533 9 Jarrettsville MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-534 A Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-534 0 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-534 1 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2003-12-19   
443-534 2 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2003-12-19   
443-534 3 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2003-11-19   
443-534 4 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2003-11-19   
443-534 5 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-02-28   
443-534 6 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-02-28   
443-534 7 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-06-03   
443-534 8 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-08-02   
443-534 9 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-535 A Columbia MD CLVLMDCERP0  9212 VERIZON MARYLAND, INC. 238   2024-01-30   
443-535 0 Columbia MD CLVLMDCERP0  9212 VERIZON MARYLAND, INC. 238      
443-535 1 Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-05-20   
443-535 2 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-09-15   
443-535 3 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-01-21   
443-535 4 Columbia MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2006-05-15   
443-535 5 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-02-08   
443-535 6 Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-03-21   
443-535 7 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2009-07-09   
443-535 8 Columbia MD CLVLMDCERP0  9212 VERIZON MARYLAND, INC. 238      
443-535 9 Columbia MD CLVLMDCERP0  9212 VERIZON MARYLAND, INC. 238      
443-536 A Westminster MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-536 0 Westminster MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-12-10   
443-536 1 Westminster MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-536 2 Westminster MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2005-01-18   
443-536 3 Westminster MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-536 4 Westminster MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2007-08-22   
443-536 5 Westminster MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-536 6 Westminster MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-536 7 Westminster MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2007-08-22   
443-536 8 Westminster MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2006-06-07   
443-536 9 Westminster MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-537 A Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-537 0 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2009-10-30   
443-537 1 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2009-10-25   
443-537 2 Columbia MD CLMAMDJTBMD  2589 US LEC OF MARYLAND, INC. 238   2011-03-11   
443-537 3 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-06-03   
443-537 4 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2009-07-13   
443-537 5 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-06-14   
443-537 6 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-06-14   
443-537 7 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-06-14   
443-537 8 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-06-14   
443-537 9 Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-05   
443-538 A Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-539 A Columbia MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-539 0 Columbia MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-539 1 Columbia MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-539 2 Columbia MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-539 3 Columbia MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-539 4 Columbia MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2006-08-15   
443-539 5 Columbia MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-539 6 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-10-28   
443-539 7 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-02-15   
443-539 8 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-13   
443-539 9 Columbia MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-540 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-541 A Cockeysville MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-541 0 Cockeysville MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-541 1 Cockeysville MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-541 2 Cockeysville MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-541 3 Cockeysville MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-541 4 Cockeysville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-08-20   
443-541 5 Cockeysville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-01-10   
443-541 6 Cockeysville MD   515J IP HORIZON LLC 238   2016-10-14   
443-541 7 Cockeysville MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-03-14   
443-541 8 Cockeysville MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-541 9 Cockeysville MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-542 A Columbia MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-542 0 Columbia MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-542 1 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2004-11-25   
443-542 2 Columbia MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-542 3 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-03-12   
443-542 4 Columbia MD CLMAMDSRRS0  9212 VERIZON MARYLAND, INC. 238   2004-12-20   
443-542 5 Columbia MD HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2004-06-25   
443-542 6 Columbia MD CLMAMDSRRS0  9212 VERIZON MARYLAND, INC. 238   2004-12-20   
443-542 7 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-02-02   

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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