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Catonsville, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-206 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-227 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-245 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-292 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-294 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-302 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-370 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-402 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 0 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-402 1 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 2 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 3 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-402 4 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-402 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-11-29   
410-402 6 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 7 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 8 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 9 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-428 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-440 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-446 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-455 A CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      
410-491 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 0 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 1 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 2 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 3 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 4 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 5 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 6 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 7 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 8 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 9 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 0 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 1 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 2 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 3 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 4 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 5 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 6 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 7 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 8 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 9 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-599 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 0 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 1 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 2 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 3 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 4 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 5 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 6 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 7 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 8 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 9 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-615 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 0 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 1 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 2 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 3 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 4 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 5 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 6 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 7 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 8 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 9 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-719 A CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      
410-733 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-744 A CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      
410-747 A CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      
410-788 A CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      
410-802 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-807 A BLTMMDSNNMD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-807 0 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-807 1 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-807 2 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-807 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
410-807 4 BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2006-05-13   
410-807 5 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-807 6 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-807 7 BLTMMDSNNMD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-807 8 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-03-25   
410-807 9 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-03-25   
410-818 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-818 0 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 1 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-818 2 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-818 3 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 4 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 5 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-818 6 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 7 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 8 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 9 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-852 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-868 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-869 A CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      
410-869 0 CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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