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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
443-391 A Cockeysville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2025-04-04   
443-391 2 Cockeysville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2013-05-01   
443-391 3 Cockeysville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2013-05-15   
443-391 5 Cockeysville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-391 6 Cockeysville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2013-06-01   
443-391 7 Cockeysville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2016-08-21   
443-391 8 Cockeysville MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-391 9 Cockeysville MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-392 A Baltimore MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-392 0 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2003-10-11   
443-392 1 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2003-10-11   
443-392 2 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2003-10-11   
443-392 3 Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-02-24   
443-392 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2003-10-11   
443-392 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2003-10-11   
443-392 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2003-10-11   
443-392 7 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2004-06-10   
443-392 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2004-06-18   
443-392 9 Baltimore MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-393 A Columbia MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-393 0 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-01-08   
443-393 1 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-01-08   
443-393 2 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-09-10   
443-393 3 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-09-10   
443-393 4 Columbia MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-393 5 Columbia MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-393 6 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-05-08   
443-393 7 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-04-03   
443-393 8 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-393 9 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-394 A Pikesville MD OWMLMDOMDS0  9212 VERIZON MARYLAND, INC. 238      
443-395 A Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236      
443-395 0 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236   2009-10-11   
443-395 1 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236   2009-10-11   
443-395 2 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236   2009-10-11   
443-395 3 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236   2009-10-11   
443-395 4 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236   2009-10-11   
443-395 5 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236   2009-10-11   
443-395 6 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236   2009-10-11   
443-395 7 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236   2009-10-11   
443-395 8 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236   2009-10-11   
443-395 9 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236   2009-10-11   
443-396 A Odenton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-396 0 Odenton MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-10-12   
443-396 1 Odenton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-396 2 Odenton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
443-396 3 Odenton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-03-07   
443-396 5 Odenton MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2020-10-28   
443-396 6 Odenton MD   515J IP HORIZON LLC 238   2017-07-07   
443-396 7 Odenton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2018-05-27   
443-396 8 Odenton MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-396 9 Odenton MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2020-04-02   
443-397 A Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-397 0 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2009-06-06   
443-397 1 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2010-03-13   
443-397 2 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2009-09-03   
443-397 3 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2009-10-02   
443-397 4 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2009-10-14   
443-397 5 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2009-10-14   
443-397 6 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2010-01-16   
443-397 7 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2009-08-01   
443-397 8 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2010-02-16   
443-397 9 Salisbury MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2010-03-28   
443-398 A Sykesville MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-398 0 Sykesville MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-398 1 Sykesville MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-398 2 Sykesville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-26   
443-398 3 Sykesville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-02-29   
443-398 4 Sykesville MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-398 5 Sykesville MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-398 6 Sykesville MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-398 7 Sykesville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-398 8 Sykesville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2016-04-22   
443-398 9 Sykesville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-399 A Dundalk MD   876D ONVOY, LLC - MD 238      
443-399 0 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-10-21   
443-399 1 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-10-21   
443-399 2 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-399 3 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-23   
443-399 5 Dundalk MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2020-10-28   
443-399 6 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-23   
443-399 7 Dundalk MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-04-02   
443-399 8 Dundalk MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2008-03-19   
443-399 9 Dundalk MD   515J IP HORIZON LLC 238   2013-09-06   
443-400 A Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-400 0 Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-400 1 Brooklyn Park-Linthicum MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-10-11   
443-400 2 Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-400 3 Brooklyn Park-Linthicum MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-06-14   
443-400 4 Brooklyn Park-Linthicum MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-10-11   
443-400 5 Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-400 6 Brooklyn Park-Linthicum MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2014-03-27   
443-400 7 Brooklyn Park-Linthicum MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-09-13   
443-400 8 Brooklyn Park-Linthicum MD   829J PAETEC ITEL, LLC 238   2002-05-19   
443-400 9 Brooklyn Park-Linthicum MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-10-04   
443-401 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-401 0 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-12-16   
443-401 1 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-12-16   
443-401 2 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-12-16   
443-401 3 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-12-19   

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Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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