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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
443-404 A Solomons MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-404 0 Solomons MD   5562 METROPCS, INC. 238   2007-03-19   
443-404 1 Solomons MD   5562 METROPCS, INC. 238      
443-404 2 Solomons MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2006-07-31   
443-404 3 Solomons MD   5562 METROPCS, INC. 238   2007-03-19   
443-404 4 Solomons MD   5562 METROPCS, INC. 238   2007-03-19   
443-404 5 Solomons MD   318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-404 6 Solomons MD   5562 METROPCS, INC. 238   2006-07-26   
443-404 7 Solomons MD   5562 METROPCS, INC. 238   2004-07-30   
443-404 8 Solomons MD   5562 METROPCS, INC. 238   2003-11-30   
443-404 9 Solomons MD   5562 METROPCS, INC. 238      
443-405 A Randallstown MD   318J COMCAST IP PHONE, LLC 238      
443-405 0 Randallstown MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2024-11-10   
443-405 2 Randallstown MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-03   
443-405 3 Randallstown MD   318J COMCAST IP PHONE, LLC 238   2006-09-27   
443-405 5 Randallstown MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2021-04-30   
443-405 6 Randallstown MD   318J COMCAST IP PHONE, LLC 238   2018-11-29   
443-405 7 Randallstown MD   318J COMCAST IP PHONE, LLC 238   2011-12-10   
443-405 8 Randallstown MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-405 9 Randallstown MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-406 A Elkton MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-406 0 Elkton MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2007-02-10   
443-406 1 Elkton MD   829J PAETEC ITEL, LLC 238   2002-06-24   
443-406 2 Elkton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-03   
443-406 3 Elkton MD   318J COMCAST IP PHONE, LLC 238   2015-11-18   
443-406 4 Elkton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-11-05   
443-406 5 Elkton MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2007-02-10   
443-406 6 Elkton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-406 7 Elkton MD   318J COMCAST IP PHONE, LLC 238   2007-02-27   
443-406 8 Elkton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-25   
443-406 9 Elkton MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-407 A Dundalk MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-407 0 Dundalk MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-407 1 Dundalk MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-407 2 Dundalk MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-407 3 Dundalk MD   624H ONVOY SPECTRUM, LLC 238   2022-03-24   
443-407 4 Dundalk MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-407 5 Dundalk MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-407 6 Dundalk MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-407 7 Dundalk MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-16   
443-407 8 Dundalk MD   876D ONVOY, LLC - MD 238   2016-03-31   
443-407 9 Dundalk MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 A Sparrows Point MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 0 Sparrows Point MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 1 Sparrows Point MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 2 Sparrows Point MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-05-16   
443-408 3 Sparrows Point MD   145J TERRA NOVA TELECOM INC. 238   2024-07-16   
443-408 5 Sparrows Point MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-10-13   
443-408 6 Sparrows Point MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-10-13   
443-408 7 Sparrows Point MD   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   

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

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