Local Calling Guide

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Sparrows Point, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-388 A NRPNMDNPRP0  9212 VERIZON MARYLAND, INC. 238      
410-477 A NRPNMDNPRP0  9212 VERIZON MARYLAND, INC. 238      
410-709 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-709 0 BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
410-709 1 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-09-22   
410-709 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-709 3 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
410-709 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-08   
410-709 5   829J PAETEC ITEL, LLC 238   2008-10-14   
410-709 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-24   
410-709 7 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-24   
410-709 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
410-709 9 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-242 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-242 0   829J PAETEC ITEL, LLC 238      
443-242 1 BLTMMDCH40Z  5562 METROPCS, INC. 238   2021-02-07   
443-242 2   829J PAETEC ITEL, LLC 238   2007-06-15   
443-242 3   829J PAETEC ITEL, LLC 238      
443-242 4 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-242 5 BLTMMDCH40Z  5562 METROPCS, INC. 238   2020-09-27   
443-242 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-10-11   
443-242 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-242 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-10-22   
443-337 A BLTQMD01BMD  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-337 0 BLTMMDCH40Z  5562 METROPCS, INC. 238   2021-04-16   
443-337 1 BLTMMDCH40Z  5562 METROPCS, INC. 238   2019-10-13   
443-337 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-337 3 BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-10-01   
443-337 4 BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-01-06   
443-337 5   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-337 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-337 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-337 8 BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-337 9 BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-408 A BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 0 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 1 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-05-16   
443-408 3 BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-07-16   
443-408 5 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-10-13   
443-408 6 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-10-13   
443-408 7 BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-408 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-408 9 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-594 A   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-594 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-10   
443-594 3 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-594 5 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-594 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-594 7 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-24   
443-594 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-24   
443-594 9   515J IP HORIZON LLC 238   2016-10-14   
443-649 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-649 0   829J PAETEC ITEL, LLC 238      
443-649 1   829J PAETEC ITEL, LLC 238      
443-649 2   829J PAETEC ITEL, LLC 238      
443-649 3   829J PAETEC ITEL, LLC 238      
443-649 4 BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-11-25   
443-649 5 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-11-06   
443-649 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-649 7 BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-04-16   
443-649 8   515J IP HORIZON LLC 238   2016-01-04   
443-649 9   829J PAETEC ITEL, LLC 238      
443-943 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-943 0 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-943 1 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-943 2 BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-06-14   
443-943 3 BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-06-14   
443-943 4 BLTMMDCH40Z  5562 METROPCS, INC. 238   2014-07-04   
443-943 5 BLTMMDCH40Z  5562 METROPCS, INC. 238   2014-10-04   
443-943 6 BLTMMDCH40Z  5562 METROPCS, INC. 238   2014-12-19   
443-943 7 BLTMMDCH40Z  5562 METROPCS, INC. 238   2015-03-06   
443-943 8   515J IP HORIZON LLC 238   2015-03-23   
443-943 9 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
667-778 A BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-778 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-12-04   
667-778 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-10-22   
667-778 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
667-778 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
667-778 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2022-10-16   
667-778 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-03-20   
667-778 6 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-02-03   
667-778 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-06-27   
667-778 8 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-02-03   
667-778 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-02-25   

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

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