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Severna Park, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-306 9 BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-344 A BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-346 A BLTQMD01BMD  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-346 0 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2021-04-19   
443-346 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-05-21   
443-346 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-346 3 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-11-24   
443-346 4 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-11-24   
443-346 5   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
443-346 6 BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-346 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
443-346 8   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
443-346 9   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
443-597 A   5562 METROPCS, INC. 238      
443-597 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-04-03   
443-597 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-04-03   
443-597 2 BLTMMDCH40Z  5562 METROPCS, INC. 238   2007-01-03   
443-597 3 BLTMMDCH40Z  5562 METROPCS, INC. 238   2007-01-03   
443-597 4   876D ONVOY, LLC - MD 238   2025-05-10   
443-597 5 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-06-20   
443-597 6 BLTMMDCH40Z  5562 METROPCS, INC. 238   2007-01-03   
443-597 7 BLTMMDCH40Z  5562 METROPCS, INC. 238   2007-01-03   
443-597 8 BLTMMDCH40Z  5562 METROPCS, INC. 238   2006-08-14   
443-597 9 BLTMMDCH40Z  5562 METROPCS, INC. 238   2005-06-05   
443-694 A BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-694 0 BLTMMDCH40Z  5562 METROPCS, INC. 238   2005-03-08   
443-694 1 BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-694 2 BLTMMDCH40Z  5562 METROPCS, INC. 238   2005-01-18   
443-694 3 BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-694 4 BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-694 5 BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-694 6 BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-694 7 BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-694 8 BLTMMDCH40Z  5562 METROPCS, INC. 238   2006-04-03   
443-694 9 BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-816 A BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-816 0 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-816 1 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-816 2 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-816 3 BLTMMDCH40Z  5562 METROPCS, INC. 238   2010-12-27   
443-816 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
443-816 5   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
443-816 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
443-816 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
443-816 8 BLTMMDCH40Z  5562 METROPCS, INC. 238   2010-12-27   
443-816 9   876D ONVOY, LLC - MD 238   2025-04-06   
443-906 A BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-906 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-02-16   
443-906 1 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-02-16   
443-906 2 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-10-14   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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