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Cockeysville, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-773 6   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-773 7   9212 VERIZON MARYLAND, INC. 238      
410-773 8   9212 VERIZON MARYLAND, INC. 238      
410-773 9   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-05-08   
410-785 A CYVLMDDADS0  9212 VERIZON MARYLAND, INC. 238      
410-891 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-891 0   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-891 1   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-891 2   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-891 3   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-891 4   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2010-02-25   
410-891 5   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-02-18   
410-891 6   876D ONVOY, LLC - MD 238   2016-03-31   
410-891 7   876D ONVOY, LLC - MD 238   2024-06-07   
410-891 8   318J COMCAST IP PHONE, LLC 238   2008-04-10   
410-891 9   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-281 A BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 3   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-21   
443-281 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-281 8   318J COMCAST IP PHONE, LLC 238   2007-08-08   
443-281 9   071F BANDWIDTH.COM CLEC, LLC - MD 238   2017-07-31   
443-318 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-318 0   829J PAETEC ITEL, LLC 238      
443-318 1   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-09-04   
443-318 2   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2020-07-10   
443-318 3   5562 METROPCS, INC. 238   2015-07-03   
443-318 4   318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-318 5   5562 METROPCS, INC. 238   2017-01-18   
443-318 6   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-09-28   
443-318 7   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-12-04   
443-318 8   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-10-14   
443-318 9   829J PAETEC ITEL, LLC 238      
443-330 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-330 0   829J PAETEC ITEL, LLC 238      
443-330 1   829J PAETEC ITEL, LLC 238      
443-330 2   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-330 3   829J PAETEC ITEL, LLC 238   2005-03-10   
443-330 4   829J PAETEC ITEL, LLC 238   2004-09-05   
443-330 5   318J COMCAST IP PHONE, LLC 238   2006-10-22   
443-330 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2011-04-13   
443-330 7   071F BANDWIDTH.COM CLEC, LLC - MD 238   2013-09-08   
443-330 8   9212 VERIZON MARYLAND, INC. 238   2006-10-16   
443-330 9   829J PAETEC ITEL, LLC 238      
443-353 A CYVLMDDADS0  9212 VERIZON MARYLAND, INC. 238      
443-353 0   071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-10-26   
443-353 1   9212 VERIZON MARYLAND, INC. 238   2004-05-05   
443-353 2   9212 VERIZON MARYLAND, INC. 238   2004-05-05   
443-353 3   9212 VERIZON MARYLAND, INC. 238   2004-05-05   
443-353 4   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2012-04-26   
443-353 5   318J COMCAST IP PHONE, LLC 238   2015-04-10   
443-353 6   829J PAETEC ITEL, LLC 238   2008-06-09   
443-353 7   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-06-04   
443-353 8   515J IP HORIZON LLC 238   2016-01-04   
443-353 9   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-391 A   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2025-04-04   
443-391 2   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2013-05-01   
443-391 3   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2013-05-15   
443-391 5   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-391 6   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2013-06-01   
443-391 7   071F BANDWIDTH.COM CLEC, LLC - MD 238   2016-08-21   
443-391 8   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-391 9   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-428 A BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-541 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-541 0   829J PAETEC ITEL, LLC 238      
443-541 1   829J PAETEC ITEL, LLC 238      
443-541 2   829J PAETEC ITEL, LLC 238      
443-541 3   829J PAETEC ITEL, LLC 238      
443-541 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-08-20   
443-541 5   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-01-10   
443-541 6   515J IP HORIZON LLC 238   2016-10-14   
443-541 7   073H TELNYX LLC 238   2017-03-14   
443-541 8   829J PAETEC ITEL, LLC 238      
443-541 9   829J PAETEC ITEL, LLC 238      
443-556 A CYVLMDDADS0  9212 VERIZON MARYLAND, INC. 238      
443-578 A BLTMMDSNDS5  4773 XO MARYLAND, LLC 238      
443-578 0   4773 XO MARYLAND, LLC 238      
443-578 1   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2014-10-21   
443-578 2   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2015-10-26   
443-578 3   876D ONVOY, LLC - MD 238   2012-02-27   
443-578 4   4773 XO MARYLAND, LLC 238      
443-578 5   4773 XO MARYLAND, LLC 238      
443-578 6   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2013-08-15   
443-578 7   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-578 8   829J PAETEC ITEL, LLC 238   2008-09-26   
443-578 9   515J IP HORIZON LLC 238   2015-03-23   
443-589 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-589 0   829J PAETEC ITEL, LLC 238      
443-589 1   829J PAETEC ITEL, LLC 238      
443-589 2   829J PAETEC ITEL, LLC 238      
443-589 3   829J PAETEC ITEL, LLC 238      
443-589 4   5562 METROPCS, INC. 238   2013-06-14   
443-589 5   071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-10-19   
443-589 6   876D ONVOY, LLC - MD 238   2024-07-15   
443-589 7   876D ONVOY, LLC - MD 238   2016-03-14   

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

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