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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
443-874 A Baltimore MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-874 0 Baltimore MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-874 1 Baltimore MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-08-03   
443-874 2 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 3 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 4 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 5 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 6 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 7 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 8 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 9 Baltimore MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-875 A Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-875 0 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-875 1 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-03-10   
443-875 2 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2007-10-17   
443-875 3 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2007-10-17   
443-875 4 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2007-10-17   
443-875 5 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2007-11-16   
443-875 6 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2007-11-16   
443-875 7 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-10-03   
443-875 8 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-09-01   
443-875 9 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-03-10   
443-876 A Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-876 0 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-07-15   
443-876 1 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-09-02   
443-876 2 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-07-09   
443-876 3 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-07-27   
443-876 4 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-01-13   
443-876 5 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-09-29   
443-876 6 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-02-23   
443-876 7 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-02-23   
443-876 8 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-07-09   
443-876 9 Bel Air MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2007-07-09   
443-877 A North East MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-877 0 North East MD   145J TERRA NOVA TELECOM INC. 238   2021-01-28   
443-877 1 North East MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-02-04   
443-877 2 North East MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-10-16   
443-877 3 North East MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-10-19   
443-877 4 North East MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-877 5 North East MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-877 6 North East MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-12-30   
443-877 7 North East MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2014-05-02   
443-877 8 North East MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-01-08   
443-877 9 North East MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-878 A Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-878 0 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-02-16   
443-878 1 Columbia MD   829J PAETEC ITEL, LLC 238   2005-08-25   
443-878 2 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-09-20   
443-878 3 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-03-04   
443-878 4 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-04-01   
443-878 5 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-04-24   
443-878 6 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-04-24   
443-878 7 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-02-03   
443-878 8 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-07-22   
443-878 9 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-04-24   
443-879 A Dundalk MD DNDLMDDNDS0  9212 VERIZON MARYLAND, INC. 238      
443-879 0 Dundalk MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
443-879 1 Dundalk MD   829J PAETEC ITEL, LLC 238   2006-01-20   
443-879 2 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-05   
443-879 3 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-16   
443-879 4 Dundalk MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-11-11   
443-879 5 Dundalk MD DNDLMDDNDS0  9212 VERIZON MARYLAND, INC. 238   2003-08-09   
443-879 6 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-07-28   
443-879 7 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-879 8 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-879 9 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-880 A Salisbury MD SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242      
443-880 0 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2003-08-03   
443-880 1 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2006-02-03   
443-880 2 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2003-08-19   
443-880 3 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2003-11-03   
443-880 4 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2003-12-19   
443-880 5 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2004-04-01   
443-880 6 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2004-05-02   
443-880 7 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2004-02-17   
443-880 8 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2003-07-05   
443-880 9 Salisbury MD SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242      
443-881 A Reisterstown MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-881 0 Reisterstown MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-03-19   
443-881 1 Reisterstown MD   515J IP HORIZON LLC 238   2015-03-23   
443-881 2 Reisterstown MD   829J PAETEC ITEL, LLC 238   2006-12-29   
443-881 3 Reisterstown MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-10-14   
443-881 4 Reisterstown MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-06-22   
443-881 5 Reisterstown MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-04-04   
443-881 6 Reisterstown MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-12-29   
443-881 7 Reisterstown MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-881 8 Reisterstown MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-881 9 Reisterstown MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-882 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-882 0 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 1 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 2 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 7 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-882 9 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-883 A Glen Burnie MD BLTMMDCHCMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      

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Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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