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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
443-942 A Severna Park MD CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-942 0 Severna Park MD   5562 METROPCS, INC. 238   2007-06-27   
443-942 1 Severna Park MD   5562 METROPCS, INC. 238   2007-06-27   
443-942 2 Severna Park MD   5562 METROPCS, INC. 238   2007-06-27   
443-942 3 Severna Park MD   5562 METROPCS, INC. 238   2007-06-27   
443-942 4 Severna Park MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-12-27   
443-942 5 Severna Park MD   5562 METROPCS, INC. 238   2010-12-27   
443-942 6 Severna Park MD   5562 METROPCS, INC. 238   2010-07-16   
443-942 7 Severna Park MD   5562 METROPCS, INC. 238   2010-07-16   
443-942 8 Severna Park MD   5562 METROPCS, INC. 238   2008-02-22   
443-942 9 Severna Park MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-943 A Sparrows Point MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-943 0 Sparrows Point MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-943 1 Sparrows Point MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-943 2 Sparrows Point MD   5562 METROPCS, INC. 238   2013-06-14   
443-943 3 Sparrows Point MD   5562 METROPCS, INC. 238   2013-06-14   
443-943 4 Sparrows Point MD   5562 METROPCS, INC. 238   2014-07-04   
443-943 5 Sparrows Point MD   5562 METROPCS, INC. 238   2014-10-04   
443-943 6 Sparrows Point MD   5562 METROPCS, INC. 238   2014-12-19   
443-943 7 Sparrows Point MD   5562 METROPCS, INC. 238   2015-03-06   
443-943 8 Sparrows Point MD   515J IP HORIZON LLC 238   2015-03-23   
443-943 9 Sparrows Point MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-944 A Salisbury MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242      
443-944 0 Salisbury MD   318J COMCAST IP PHONE, LLC 242   2006-07-30   
443-944 1 Salisbury MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2006-11-02   
443-944 2 Salisbury MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2006-11-02   
443-944 3 Salisbury MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2007-01-02   
443-944 4 Salisbury MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2007-02-02   
443-944 5 Salisbury MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2007-04-02   
443-944 6 Salisbury MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2007-05-03   
443-944 7 Salisbury MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2007-06-01   
443-944 8 Salisbury MD   318J COMCAST IP PHONE, LLC 242   2007-01-08   
443-944 9 Salisbury MD   318J COMCAST IP PHONE, LLC 242   2007-01-08   
443-945 A Elkton MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-945 0 Elkton MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-945 1 Elkton MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-945 2 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-12-14   
443-945 3 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-08-01   
443-945 4 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-10-03   
443-945 5 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-03-03   
443-945 6 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-04-02   
443-945 7 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-03-16   
443-945 8 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2013-12-01   
443-945 9 Elkton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-946 A Parkville MD BLTQMD01BMD  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-946 0 Parkville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2020-04-06   
443-946 1 Parkville MD   318J COMCAST IP PHONE, LLC 238   2020-02-12   
443-946 2 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-946 3 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
443-946 4 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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