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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   073H TELNYX LLC 238   2017-04-26   
410-709 1   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   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
410-709 4   876D ONVOY, LLC - MD 238   2016-03-08   
410-709 5   829J PAETEC ITEL, LLC 238   2008-10-14   
410-709 6   876D ONVOY, LLC - MD 238   2016-03-24   
410-709 7   876D ONVOY, LLC - MD 238   2016-03-24   
410-709 8   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
410-709 9   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   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   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-242 5   5562 METROPCS, INC. 238   2020-09-27   
443-242 6   318J COMCAST IP PHONE, LLC 238   2007-10-11   
443-242 7   318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-242 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2025-08-21   
443-242 9   876D ONVOY, LLC - MD 238   2023-10-22   
443-337 A BLTQMD01BMD  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-337 0   5562 METROPCS, INC. 238   2021-04-16   
443-337 1   5562 METROPCS, INC. 238   2019-10-13   
443-337 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-337 3   5562 METROPCS, INC. 238   2017-10-01   
443-337 4   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   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-337 9   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-408 A BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-408 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-05-16   
443-408 3   145J TERRA NOVA TELECOM INC. 238   2024-07-16   
443-408 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-10-13   
443-408 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-10-13   
443-408 7   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-408 8   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-408 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-594 A   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-594 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2025-07-31   
443-594 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2025-12-08   
443-594 2   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-10   
443-594 3   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-594 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2025-12-08   
443-594 5   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-594 6   876D ONVOY, LLC - MD 238   2012-10-08   
443-594 7   876D ONVOY, LLC - MD 238   2016-03-24   
443-594 8   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   5562 METROPCS, INC. 238   2016-11-25   
443-649 5   318J COMCAST IP PHONE, LLC 238   2014-11-06   
443-649 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-649 7   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   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-943 1   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-943 2   5562 METROPCS, INC. 238   2013-06-14   
443-943 3   5562 METROPCS, INC. 238   2013-06-14   
443-943 4   5562 METROPCS, INC. 238   2014-07-04   
443-943 5   5562 METROPCS, INC. 238   2014-10-04   
443-943 6   5562 METROPCS, INC. 238   2014-12-19   
443-943 7   5562 METROPCS, INC. 238   2015-03-06   
443-943 8   515J IP HORIZON LLC 238   2015-03-23   
443-943 9   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
667-778 A BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-778 0   071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-12-04   
667-778 1   876D ONVOY, LLC - MD 238   2023-10-22   
667-778 2   876D ONVOY, LLC - MD 238   2021-07-12   
667-778 3   876D ONVOY, LLC - MD 238   2021-07-12   
667-778 4   876D ONVOY, LLC - MD 238   2022-10-16   
667-778 5   071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-03-20   
667-778 6   624H ONVOY SPECTRUM, LLC 238   2022-02-03   
667-778 7   624H ONVOY SPECTRUM, LLC 238   2021-06-27   
667-778 8   624H ONVOY SPECTRUM, LLC 238   2022-02-03   
667-778 9   071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-02-25   

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

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