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Woodlawn, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-200 7 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-200 8 BLTMMDCHXHX  515J IP HORIZON LLC 238   2021-08-15   
443-200 9 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-316 A   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-316 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-12-02   
443-316 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-12-02   
443-316 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-05-18   
443-316 3   829J PAETEC ITEL, LLC 238   2006-05-11   
443-316 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-05-09   
443-316 5 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-316 6 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-316 7 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-07   
443-316 8 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2008-02-01   
443-316 9 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-05-01   
443-348 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-348 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-03-08   
443-348 1 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-348 2 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-348 3 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2017-12-02   
443-348 4 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-348 5 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-10-06   
443-348 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
443-348 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2011-11-11   
443-348 8 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-16   
443-348 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-04-14   
443-380 A BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-380 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-380 1 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-09-04   
443-380 2 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-02-10   
443-380 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-380 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-05-05   
443-380 5 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238   2011-04-15   
443-380 6 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238   2011-04-15   
443-380 7 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238   2011-04-15   
443-380 8 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238   2011-04-15   
443-380 9 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-05-01   
443-429 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-429 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-429 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-429 2 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-04-17   
443-429 3   829J PAETEC ITEL, LLC 238   2001-11-01   
443-429 4   829J PAETEC ITEL, LLC 238   2001-11-01   
443-429 5   829J PAETEC ITEL, LLC 238   2001-11-01   
443-429 6   829J PAETEC ITEL, LLC 238   2001-11-01   
443-429 7   829J PAETEC ITEL, LLC 238   2001-11-01   
443-429 8 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-429 9 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-436 A WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 0 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 1 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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