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Catonsville, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-206 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-227 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-245 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-292 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-294 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-302 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-370 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-402 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-402 1   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 2   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-402 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-402 5   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-11-29   
410-402 6   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 7   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 8   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 9   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-428 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-440 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-446 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-455 A CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      
410-491 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-491 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-530 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-599 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-608 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-615 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-718 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-719 A CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      
410-733 A CLMAMDORGT0  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 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-807 A BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-807 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-807 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-807 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-807 3   876D ONVOY, LLC - MD 238   2012-10-08   
410-807 4   8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2006-05-13   
410-807 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-807 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-807 7   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
410-807 8   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-03-25   
410-807 9   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-03-25   
410-818 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-818 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 1   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-818 2   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-818 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 5   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-818 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-818 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-852 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-868 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-869 A CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      
410-869 0   9212 VERIZON MARYLAND, INC. 238      

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

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