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Parkville, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-248 A PRHLMDPHDS0  9212 VERIZON MARYLAND, INC. 238      
410-248 0 PRHLMDPHDS0  9212 VERIZON MARYLAND, INC. 238      
410-248 1 PRHLMDPHDS0  9212 VERIZON MARYLAND, INC. 238      
410-248 2 PRHLMDPHDS0  9212 VERIZON MARYLAND, INC. 238      
410-248 3 PRHLMDPHDS0  9212 VERIZON MARYLAND, INC. 238      
410-248 4 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
410-248 5 BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2003-11-08   
410-248 6   145J TERRA NOVA TELECOM INC. 238   2021-09-24   
410-248 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
410-248 8 PRHLMDPHDS0  9212 VERIZON MARYLAND, INC. 238      
410-248 9 PRHLMDPHDS0  9212 VERIZON MARYLAND, INC. 238      
410-256 A PRHLMDPHDS0  9212 VERIZON MARYLAND, INC. 238      
410-497 A BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
410-497 0 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
410-497 1 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2007-04-20   
410-497 2 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-08-18   
410-497 3   829J PAETEC ITEL, LLC 238   2006-04-01   
410-497 4 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2009-02-12   
410-497 5 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-08-08   
410-497 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-04-18   
410-497 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
410-497 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
410-497 9 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2012-12-07   
410-513 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-513 0 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-513 1 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-513 2 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-513 3 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-513 4 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-08-23   
410-513 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-08   
410-513 6 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-02-21   
410-513 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-12-17   
410-513 8   829J PAETEC ITEL, LLC 238   2004-03-27   
410-513 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-11-28   
410-529 A PRHLMDPHDS0  9212 VERIZON MARYLAND, INC. 238      
410-657 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-657 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-05-06   
410-657 1 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2018-05-10   
410-657 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-05-20   
410-657 3 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-657 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-28   
410-657 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-05-20   
410-657 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-28   
410-657 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-09-12   
410-657 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-06-26   
410-657 9 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-661 A PKVLMDPKDS0  9212 VERIZON MARYLAND, INC. 238      
410-663 A PKVLMDPKDS0  9212 VERIZON MARYLAND, INC. 238      
410-665 A PKVLMDPKDS0  9212 VERIZON MARYLAND, INC. 238      
410-668 A PKVLMDPKDS0  9212 VERIZON MARYLAND, INC. 238      
410-870 A BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
410-870 0 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-04-16   
410-870 1 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-06-19   
410-870 2 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-06-19   
410-870 3 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-27   
410-870 4 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-09-18   
410-870 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-10-14   
410-870 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-27   
410-870 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-04-29   
410-870 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-06-11   
410-870 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-10-12   
410-882 A PKVLMDPKDS0  9212 VERIZON MARYLAND, INC. 238      
410-931 A WHMRMDWMRS2  9212 VERIZON MARYLAND, INC. 238      
410-933 A WHMRMDWMRS2  9212 VERIZON MARYLAND, INC. 238      
443-219 A BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-219 0 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-219 1 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-219 2 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-01-13   
443-219 3 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-02-10   
443-219 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-02-20   
443-219 5 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2012-03-10   
443-219 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-10-12   
443-219 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2013-04-22   
443-219 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2013-04-22   
443-219 9 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-290 A BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
443-290 0   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
443-290 1   515J IP HORIZON LLC 238   2013-09-06   
443-290 2 BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
443-290 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-29   
443-290 4 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-01-06   
443-290 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
443-290 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-03-31   
443-290 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2016-08-15   
443-290 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-03-31   
443-290 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2016-08-15   
443-384 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-384 0 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-384 1 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-384 2   829J PAETEC ITEL, LLC 238   2001-11-01   
443-384 3   829J PAETEC ITEL, LLC 238   2001-11-01   
443-384 4   829J PAETEC ITEL, LLC 238   2001-11-01   
443-384 5 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2020-11-14   
443-384 6   829J PAETEC ITEL, LLC 238   2001-11-01   
443-384 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-03-31   
443-384 8 BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-04-02   
443-384 9   829J PAETEC ITEL, LLC 238      
443-425 A BLTMMDCHCMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-425 0 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-05-21   
443-425 1 BLTMMDCHCMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      

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

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