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Cockeysville, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-589 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-589 9   829J PAETEC ITEL, LLC 238      
443-689 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-689 0   829J PAETEC ITEL, LLC 238      
443-689 1 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2021-03-24   
443-689 2 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2017-06-21   
443-689 3 BLTQMD012MD  964H BARR TELL USA, INC. 238   2016-12-17   
443-689 4   829J PAETEC ITEL, LLC 238      
443-689 5   829J PAETEC ITEL, LLC 238      
443-689 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-11-11   
443-689 8   145J TERRA NOVA TELECOM INC. 238   2023-08-06   
443-689 9 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-22   
443-705 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2024-03-01   
443-705 0 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-09-16   
443-705 1 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-09-16   
443-705 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-15   
443-705 5 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2019-08-22   
443-705 6 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2019-10-18   
443-705 7 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2019-10-18   
443-705 8 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-07-19   
443-705 9 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-07-19   
443-886 A CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-886 0 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-12-26   
443-886 1 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-12-26   
443-886 2 CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-886 3 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2013-02-11   
443-886 4 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-11-17   
443-886 5 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-10-05   
443-886 6 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-07-21   
443-886 7 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-10-05   
443-886 8 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-09-18   
443-886 9 BLTMMDCHCMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-933 A CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-933 0 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2015-11-28   
443-933 1 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-10-07   
443-933 2 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-10-07   
443-933 3 BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-05   
443-933 4 CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2004-06-11   
443-933 5 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-10-07   
443-933 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-30   
443-933 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-30   
443-933 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-933 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
667-318 A BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-318 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-07-03   
667-318 1 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-11-26   
667-318 2 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2021-07-13   
667-318 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-11   
667-318 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-11   
667-318 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-11-26   
667-318 6 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-10-10   
667-318 7 BLTMMDCHCMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2021-10-25   
667-318 8 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-09-10   
667-318 9 BLTMMDCH40Z  5562 METROPCS, INC. 238   2022-02-01   
667-846 A BLTQMD01BMD  516J TON80 COMMUNICATIONS, LLC 238      
667-846 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-846 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-846 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2022-04-26   
667-846 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-846 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-846 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-846 6 BLTQMD01BMD  516J TON80 COMMUNICATIONS, LLC 238   2022-04-25   
667-846 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2025-08-11   
667-846 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-04-19   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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