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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
443-335 2 Brooklyn Park-Linthicum MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2018-11-18   
443-335 4 Brooklyn Park-Linthicum MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2019-10-13   
443-335 5 Brooklyn Park-Linthicum MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2020-01-24   
443-335 6 Brooklyn Park-Linthicum MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2020-10-26   
443-335 8 Brooklyn Park-Linthicum MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   
443-335 9 Brooklyn Park-Linthicum MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   
443-336 A Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-336 0 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-336 1 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-336 2 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-336 3 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-336 4 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-336 5 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-336 6 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-336 7 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-336 8 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-336 9 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-337 A Sparrows Point MD BLTQMD01BMD  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-337 0 Sparrows Point MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2021-04-16   
443-337 1 Sparrows Point MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2019-10-13   
443-337 2 Sparrows Point MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-337 3 Sparrows Point MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-10-01   
443-337 4 Sparrows Point MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-01-06   
443-337 5 Sparrows Point MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-337 6 Sparrows Point MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-337 7 Sparrows Point MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-337 8 Sparrows Point MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-337 9 Sparrows Point MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-338 A Sparks-Glencoe MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-338 0 Sparks-Glencoe MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-06-07   
443-338 1 Sparks-Glencoe MD   515J IP HORIZON LLC 238   2015-03-21   
443-338 2 Sparks-Glencoe MD   829J PAETEC ITEL, LLC 238      
443-338 3 Sparks-Glencoe MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-07-06   
443-338 4 Sparks-Glencoe MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-08-06   
443-338 5 Sparks-Glencoe MD   515J IP HORIZON LLC 238   2016-05-31   
443-338 6 Sparks-Glencoe MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2017-02-27   
443-338 7 Sparks-Glencoe MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-338 8 Sparks-Glencoe MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-26   
443-338 9 Sparks-Glencoe MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-26   
443-339 A Sherwood Forest MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-339 0 Sherwood Forest MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-339 1 Sherwood Forest MD   829J PAETEC ITEL, LLC 238      
443-339 2 Sherwood Forest MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2020-11-14   
443-339 3 Sherwood Forest MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   
443-339 4 Sherwood Forest MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   
443-339 5 Sherwood Forest MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-18   
443-339 6 Sherwood Forest MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-18   
443-339 7 Sherwood Forest MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-339 8 Sherwood Forest MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-27   
443-339 9 Sherwood Forest MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-27   
443-340 A Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-341 A Catonsville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-341 0 Catonsville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-341 1 Catonsville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-341 2 Catonsville MD BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
443-341 3 Catonsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
443-341 4 Catonsville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-02-20   
443-341 5 Catonsville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-12-27   
443-341 6 Catonsville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-341 7 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-03-19   
443-341 8 Catonsville MD   829J PAETEC ITEL, LLC 238   2004-03-27   
443-341 9 Catonsville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-342 A Solomons MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-342 1 Solomons MD   829J PAETEC ITEL, LLC 238      
443-342 2 Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
443-342 3 Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-13   
443-342 4 Solomons MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-01-04   
443-342 5 Solomons MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-342 6 Solomons MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-07-06   
443-342 7 Solomons MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-342 8 Solomons MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-06-16   
443-342 9 Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
443-343 A Millersville MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-343 0 Millersville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-04-07   
443-343 1 Millersville MD   829J PAETEC ITEL, LLC 238   2003-07-12   
443-343 2 Millersville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-343 3 Millersville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-343 5 Millersville MD   829J PAETEC ITEL, LLC 238   2006-05-20   
443-343 6 Millersville MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-22   
443-343 7 Millersville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-07-28   
443-343 8 Millersville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-01-09   
443-343 9 Millersville MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-344 A Severna Park MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-345 A Aberdeen MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-345 0 Aberdeen MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-22   
443-345 1 Aberdeen MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-05-14   
443-345 2 Aberdeen MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-05-14   
443-345 3 Aberdeen MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-03-13   
443-345 4 Aberdeen MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-345 5 Aberdeen MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2010-11-01   
443-345 6 Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-10-06   
443-345 7 Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-07-11   
443-345 8 Aberdeen MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-09-04   
443-345 9 Aberdeen MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-28   
443-346 A Severna Park MD BLTQMD01BMD  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-346 0 Severna Park MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2021-04-19   
443-346 1 Severna Park MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-05-21   
443-346 2 Severna Park MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-346 3 Severna Park MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-11-24   
443-346 4 Severna Park MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-11-24   

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Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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