Local Calling Guide

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Washington Zone 10, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-567 5   9212 VERIZON MARYLAND, INC. 236   2006-08-26   
240-567 6   9212 VERIZON MARYLAND, INC. 236   2006-08-26   
240-567 7   9212 VERIZON MARYLAND, INC. 236   2006-08-26   
240-567 8   9212 VERIZON MARYLAND, INC. 236   2006-08-26   
240-567 9   9212 VERIZON MARYLAND, INC. 236   2006-08-26   
240-599 A MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-599 0   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-599 1   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-599 2   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-599 3   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-599 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-599 5   071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-05-30   
240-599 6   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-06-02   
240-599 7   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-599 8   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-599 9   145J TERRA NOVA TELECOM INC. 236   2021-07-16   
240-614 A BTVLMD12CMA  5562 METROPCS, INC. 236      
240-614 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-09-24   
240-614 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-09-24   
240-614 2   071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-06-11   
240-614 3   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2013-11-22   
240-614 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-08-18   
240-614 5   5562 METROPCS, INC. 236   2014-09-11   
240-614 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-12-27   
240-614 7   318J COMCAST IP PHONE, LLC 236   2013-11-22   
240-614 8   5562 METROPCS, INC. 236   2014-10-15   
240-614 9   5562 METROPCS, INC. 236   2013-09-14   
240-618 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-618 0   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2014-11-21   
240-618 1   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2015-01-05   
240-618 2   876D ONVOY, LLC - MD 236   2014-12-31   
240-618 3   876D ONVOY, LLC - MD 236   2014-12-31   
240-618 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2015-02-14   
240-618 5   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2016-05-24   
240-618 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2015-02-14   
240-618 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-11-24   
240-618 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-11-24   
240-618 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2017-01-17   
240-620 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-620 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-620 1   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2003-08-03   
240-620 2   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2003-07-05   
240-620 3   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2003-08-19   
240-620 4   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2003-11-03   
240-620 5   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2003-11-03   
240-620 6   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2004-02-17   
240-620 7   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2004-04-20   
240-620 8   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2004-06-03   
240-620 9   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-06-02   
240-642 A VINNVACB7MD  181J ADVANCED TELECOM SOLUTIONS, LLC 236      
240-642 0   181J ADVANCED TELECOM SOLUTIONS, LLC 236   2018-09-16   
240-642 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2020-10-31   
240-642 2   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
240-642 3   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2019-11-17   
240-642 4   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
240-642 5   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
240-642 6   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
240-642 7   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
240-642 8   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2019-02-21   
240-642 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2020-10-31   
240-660 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-660 0   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2015-05-30   
240-660 1   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2015-10-01   
240-660 2   318J COMCAST IP PHONE, LLC 236   2015-10-05   
240-660 3   876D ONVOY, LLC - MD 236   2016-04-28   
240-660 4   876D ONVOY, LLC - MD 236   2016-03-14   
240-660 5   876D ONVOY, LLC - MD 236   2016-03-14   
240-660 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2016-02-06   
240-660 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2016-02-06   
240-660 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2016-02-06   
240-660 9   361H ATLANTECH ONLINE, INC. - MD 236   2015-12-26   
240-665 A BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-665 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2017-04-06   
240-665 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2017-04-06   
240-665 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2018-12-07   
240-665 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2019-11-08   
240-665 4   515J IP HORIZON LLC 236   2017-07-07   
240-665 5   876D ONVOY, LLC - MD 236   2017-07-13   
240-665 6   829J PAETEC ITEL, LLC 236   2017-03-12   
240-665 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2023-05-24   
240-665 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2017-03-11   
240-665 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2017-03-11   
240-672 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-672 0   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
240-672 1   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2004-06-03   
240-672 2   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2004-06-03   
240-672 3   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2004-09-02   
240-672 4   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
240-672 5   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-01-02   
240-672 6   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-02-03   
240-672 7   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2004-12-02   
240-672 8   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-02-03   
240-672 9   515J IP HORIZON LLC 236   2013-09-06   
240-715 A   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-715 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-12-12   
240-715 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-12-12   
240-715 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-02-13   
240-715 3   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-715 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-715 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-02-13   

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Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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