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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
443-971 4 Taneytown MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-09-13   
443-971 5 Taneytown MD   145J TERRA NOVA TELECOM INC. 238   2025-05-07   
443-971 6 Taneytown MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-971 7 Taneytown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-06-04   
443-971 8 Taneytown MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-971 9 Taneytown MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-972 A Cambridge MD   829J PAETEC ITEL, LLC 242   2025-04-01   
443-972 0 Cambridge MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2016-04-12   
443-972 1 Cambridge MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2016-04-12   
443-972 2 Cambridge MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-07-31   
443-972 3 Cambridge MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2022-09-13   
443-972 4 Cambridge MD   829J PAETEC ITEL, LLC 242   2012-08-15   
443-972 5 Cambridge MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-13   
443-972 6 Cambridge MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-07-31   
443-972 7 Cambridge MD ESTNMDESMMD  228C IDT AMERICA, CORP. - MD 242   2018-01-14   
443-972 8 Cambridge MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2021-03-08   
443-972 9 Cambridge MD SLBRMD902MD  073H TELNYX LLC 242   2017-10-19   
443-973 A Ellicott City MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-973 0 Ellicott City MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2024-10-26   
443-973 1 Ellicott City MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-10-18   
443-973 2 Ellicott City MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-03-21   
443-973 3 Ellicott City MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-973 4 Ellicott City MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-05   
443-973 5 Ellicott City MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-17   
443-973 6 Ellicott City MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-06-02   
443-973 7 Ellicott City MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-973 8 Ellicott City MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-973 9 Ellicott City MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2001-11-19   
443-974 A Westminster MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-974 0 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-03-05   
443-974 1 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-06-01   
443-974 2 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-07-19   
443-974 3 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-07-19   
443-974 4 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-10-03   
443-974 5 Westminster MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-09-23   
443-974 6 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-11-02   
443-974 7 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-01-02   
443-974 8 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-02-02   
443-974 9 Westminster MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-975 A Prince Frederick MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-975 0 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-03-03   
443-975 1 Prince Frederick MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-01-02   
443-975 2 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-08-01   
443-975 3 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-03-05   
443-975 4 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-05-03   
443-975 5 Prince Frederick MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-10-10   
443-975 6 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-08-02   
443-975 7 Prince Frederick MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-01-19   
443-975 8 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-11-15   
443-975 9 Prince Frederick MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-01-11   
443-977 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-977 0 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-12-07   
443-977 1 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-10-22   
443-977 2 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-10-22   
443-977 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-10-22   
443-977 4 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-12-08   
443-977 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-10-22   
443-977 6 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-12-08   
443-977 7 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-01-02   
443-977 8 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-03-05   
443-977 9 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-03-05   
443-978 A Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-978 0 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2012-01-19   
443-978 1 Salisbury MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2016-07-14   
443-978 2 Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242   2018-10-14   
443-978 3 Salisbury MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2017-08-20   
443-978 4 Salisbury MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2024-02-25   
443-978 5 Salisbury MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2024-02-25   
443-978 6 Salisbury MD SLBRMDSBWMD  073H TELNYX LLC 242   2024-03-31   
443-978 7 Salisbury MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2016-03-08   
443-978 8 Salisbury MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2016-01-18   
443-978 9 Salisbury MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2016-07-14   
443-979 A Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-979 0 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-19   
443-979 1 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-07-25   
443-979 2 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2014-11-22   
443-979 3 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-05-01   
443-979 4 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2014-12-29   
443-979 5 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2014-12-29   
443-979 6 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2015-03-06   
443-979 7 Columbia MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-11-20   
443-979 8 Columbia MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-20   
443-979 9 Columbia MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-20   
443-980 A Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-980 0 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-980 1 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-980 2 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-980 3 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-980 4 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-980 5 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-980 6 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-27   
443-980 7 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-980 8 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-980 9 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-981 A Fallston MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-981 0 Fallston MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-19   
443-981 1 Fallston MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-01-17   
443-981 2 Fallston MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
443-981 3 Fallston MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-08-16   
443-981 4 Fallston MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-02-15   

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Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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