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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
443-489 6 Chase MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-489 7 Chase MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-489 8 Chase MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-489 9 Chase MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-490 A Edgewood MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-490 1 Edgewood MD   145J TERRA NOVA TELECOM INC. 238   2025-05-07   
443-490 2 Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-07-28   
443-490 3 Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-08-04   
443-490 5 Edgewood MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-30   
443-490 6 Edgewood MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2017-10-19   
443-490 7 Edgewood MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2017-10-19   
443-490 8 Edgewood MD BLTQMD012MD  964H BARR TELL USA, INC. 238   2016-12-17   
443-490 9 Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-10-14   
443-491 A Parkton MD   876D ONVOY, LLC - MD 238      
443-491 2 Parkton MD   829J PAETEC ITEL, LLC 238   2005-10-07   
443-491 3 Parkton MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-491 7 Parkton MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2020-09-04   
443-491 8 Parkton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-11-18   
443-491 9 Parkton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
443-492 A Elkridge MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-492 0 Elkridge MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-10-12   
443-492 2 Elkridge MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-12   
443-492 3 Elkridge MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-12   
443-492 5 Elkridge MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-492 6 Elkridge MD   829J PAETEC ITEL, LLC 238   2008-08-01   
443-492 7 Elkridge MD   145J TERRA NOVA TELECOM INC. 238   2023-04-29   
443-492 8 Elkridge MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2011-03-15   
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 4 Millersville MD   145J TERRA NOVA TELECOM INC. 238   2025-10-06   
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 1 Parkville MD   145J TERRA NOVA TELECOM INC. 238   2025-07-25   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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