Local Calling Guide

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Washington Zone 3, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-605 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-605 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-605 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-605 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-605 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 A BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-606 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-637 A CHCHMDBEPS0  2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-637 0   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-08-02   
240-637 1   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-08-02   
240-637 2   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-08-02   
240-637 3   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-637 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2018-08-13   
240-637 5   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2018-08-13   
240-637 6   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2018-08-13   
240-637 7   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2018-08-13   
240-637 8   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2018-08-13   
240-637 9   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-638 A MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-638 0   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-638 1   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-638 2   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-638 3   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-638 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-638 5   829J PAETEC ITEL, LLC 236   2009-12-14   
240-638 6   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-05-02   
240-638 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-11-11   
240-638 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-11-11   
240-638 9   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-641 A SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-641 0   876D ONVOY, LLC - MD 236   2015-08-02   
240-641 1   876D ONVOY, LLC - MD 236   2015-08-02   
240-641 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2014-11-24   
240-641 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2014-11-24   
240-641 4   318J COMCAST IP PHONE, LLC 236   2014-12-18   
240-641 5   318J COMCAST IP PHONE, LLC 236   2016-03-23   
240-641 6   361H ATLANTECH ONLINE, INC. - MD 236   2015-12-26   
240-641 7   876D ONVOY, LLC - MD 236   2015-06-27   
240-641 8   318J COMCAST IP PHONE, LLC 236   2015-10-02   
240-641 9   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2015-06-13   
240-643 A BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-643 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-643 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-03-24   
240-643 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-03-24   
240-643 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-04-07   
240-643 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-04-07   
240-643 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-04-07   
240-643 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-643 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-05-09   
240-643 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-05-09   
240-643 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-645 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-645 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-645 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-645 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-08-23   
240-645 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-08-23   
240-645 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-645 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2004-08-06   
240-645 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2004-08-06   
240-645 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2004-08-06   
240-645 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-09-15   
240-645 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-04-20   
240-650 A VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-650 0   071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 1   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2012-09-15   
240-650 2   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2013-03-02   
240-650 3   071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 4   071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 5   071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 6   071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 7   071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 8   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2012-02-27   
240-650 9   876D ONVOY, LLC - MD 236   2012-02-29   
240-662 A SLSPMDSSDS0  9212 VERIZON MARYLAND, INC. 236      
240-670 A WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-670 0   071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-05-08   
240-670 1   876D ONVOY, LLC - MD 236   2013-05-14   
240-670 2   071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-09-06   
240-670 3   071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-09-06   
240-670 4   071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-09-06   
240-670 5   071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-09-06   
240-670 6   071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-06-11   
240-670 7   318J COMCAST IP PHONE, LLC 236   2013-06-27   
240-670 8   318J COMCAST IP PHONE, LLC 236   2014-04-08   
240-670 9   515J IP HORIZON LLC 236   2013-09-07   
240-676 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-676 0   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-676 1   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-676 2   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-01-02   
240-676 3   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-01-02   
240-676 4   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-01-02   

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

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