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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
443-492 9 Elkridge MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-493 A Delmar MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-493 0 Delmar MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2009-05-07   
443-493 1 Delmar MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2011-10-28   
443-493 2 Delmar MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2011-10-28   
443-493 3 Delmar MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2011-10-28   
443-493 4 Delmar MD SLBRMD906MD  145J TERRA NOVA TELECOM INC. 242   2024-02-15   
443-493 5 Delmar MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-493 6 Delmar MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2024-02-18   
443-493 7 Delmar MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-13   
443-493 8 Delmar MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-04-02   
443-493 9 Delmar MD SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
443-494 A Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-494 2 Millersville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
443-494 3 Millersville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-494 5 Millersville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-04-02   
443-494 6 Millersville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-07-06   
443-494 7 Millersville MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-494 8 Millersville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-494 9 Millersville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-495 A Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-495 0 Parkville MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-10-12   
443-495 2 Parkville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2016-05-18   
443-495 3 Parkville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2017-07-31   
443-495 5 Parkville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-09-12   
443-495 6 Parkville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2018-05-27   
443-495 7 Parkville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-09-25   
443-495 8 Parkville MD BLTQMD012MD  964H BARR TELL USA, INC. 238   2016-12-17   
443-495 9 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-08-14   
443-496 A Easton MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-496 0 Easton MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-496 1 Easton MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-496 2 Easton MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-496 3 Easton MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2018-07-19   
443-496 4 Easton MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-496 5 Easton MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2014-06-30   
443-496 6 Easton MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
443-496 7 Easton MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-04-12   
443-496 8 Easton MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-04-12   
443-496 9 Easton MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-04-12   
443-497 A Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-497 0 Salisbury MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
443-497 1 Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-497 2 Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-497 3 Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-497 4 Salisbury MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
443-497 5 Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242   2007-10-19   
443-497 6 Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-497 7 Salisbury MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
443-497 8 Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242   2007-03-13   
443-497 9 Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242   2007-03-13   
443-498 A Catonsville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-498 0 Catonsville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-498 1 Catonsville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-498 2 Catonsville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-498 3 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-03-19   
443-498 4 Catonsville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-498 5 Catonsville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-498 6 Catonsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
443-498 7 Catonsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
443-498 8 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-03-19   
443-498 9 Catonsville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-499 A Jarrettsville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-499 2 Jarrettsville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-03-12   
443-499 3 Jarrettsville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-03-31   
443-499 5 Jarrettsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-10-22   
443-499 6 Jarrettsville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   
443-499 7 Jarrettsville MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-499 8 Jarrettsville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   
443-499 9 Jarrettsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
443-500 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-500 0 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-500 1 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-500 2 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-500 3 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-500 4 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-500 5 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-500 6 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-500 7 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-500 8 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-500 9 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-501 A Pikesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-501 0 Pikesville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-09-29   
443-501 1 Pikesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-501 2 Pikesville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-501 3 Pikesville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-07-12   
443-501 4 Pikesville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-12-05   
443-501 6 Pikesville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-03-22   
443-501 7 Pikesville MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-04-02   
443-501 8 Pikesville MD BLTMMDCHDMD  551G NUSO, LLC 238   2016-04-01   
443-501 9 Pikesville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-10-12   
443-502 A Havre de Grace MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-502 0 Havre de Grace MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-502 1 Havre de Grace MD   829J PAETEC ITEL, LLC 238   2004-02-05   
443-502 2 Havre de Grace MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-502 3 Havre de Grace MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-502 5 Havre de Grace MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-06-29   
443-502 6 Havre de Grace MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-502 7 Havre de Grace MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-502 8 Havre de Grace MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2002-02-25   

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

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