Local Calling Guide

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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-831 3 Frederick MD   551G NUSO, LLC 240   2018-11-07   
240-831 4 Frederick MD   318J COMCAST IP PHONE, LLC 240   2018-06-16   
240-831 5 Frederick MD   876D ONVOY, LLC - MD 240   2016-05-26   
240-831 6 Frederick MD   876D ONVOY, LLC - MD 240   2016-05-26   
240-831 7 Frederick MD   876D ONVOY, LLC - MD 240   2016-05-26   
240-831 8 Frederick MD   876D ONVOY, LLC - MD 240   2016-05-26   
240-831 9 Frederick MD   551G NUSO, LLC 240   2018-07-23   
240-832 A Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-832 0 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-832 1 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-832 2 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-832 3 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-832 4 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-832 5 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-832 6 Washington Zone 2 MD   5562 METROPCS, INC. 236      
240-832 7 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2002-07-12   
240-832 8 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2002-10-07   
240-832 9 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2002-10-07   
240-833 A Washington Zone 11 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-833 0 Washington Zone 11 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-833 1 Washington Zone 11 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-833 2 Washington Zone 11 MD   318J COMCAST IP PHONE, LLC 236   2014-04-21   
240-833 3 Washington Zone 11 MD   318J COMCAST IP PHONE, LLC 236   2014-04-04   
240-833 4 Washington Zone 11 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-833 5 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2016-02-25   
240-833 6 Washington Zone 11 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-24   
240-833 7 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2016-02-25   
240-833 8 Washington Zone 11 MD   318J COMCAST IP PHONE, LLC 236   2002-03-11   
240-833 9 Washington Zone 11 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-24   
240-834 A Kitzmiller MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-834 0 Kitzmiller MD   624H ONVOY SPECTRUM, LLC 240   2022-02-26   
240-834 1 Kitzmiller MD   516J TON80 COMMUNICATIONS, LLC 240   2021-11-10   
240-834 2 Kitzmiller MD   876D ONVOY, LLC - MD 240   2021-05-14   
240-834 3 Kitzmiller MD   624H ONVOY SPECTRUM, LLC 240   2021-05-24   
240-834 4 Kitzmiller MD   876D ONVOY, LLC - MD 240   2021-05-21   
240-834 5 Kitzmiller MD   876D ONVOY, LLC - MD 240   2021-05-21   
240-834 6 Kitzmiller MD   876D ONVOY, LLC - MD 240   2021-05-21   
240-834 7 Kitzmiller MD   876D ONVOY, LLC - MD 240   2021-05-21   
240-834 8 Kitzmiller MD   876D ONVOY, LLC - MD 240   2021-05-15   
240-834 9 Kitzmiller MD   876D ONVOY, LLC - MD 240   2021-05-15   
240-835 A Clear Spring MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240      
240-835 0 Clear Spring MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2021-08-05   
240-835 1 Clear Spring MD   073H TELNYX LLC 240   2021-08-05   
240-835 2 Clear Spring MD   876D ONVOY, LLC - MD 240   2021-08-05   
240-835 3 Clear Spring MD   876D ONVOY, LLC - MD 240   2021-08-05   
240-835 4 Clear Spring MD   876D ONVOY, LLC - MD 240   2021-09-20   
240-835 5 Clear Spring MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2021-11-29   
240-835 6 Clear Spring MD   516J TON80 COMMUNICATIONS, LLC 240   2021-10-15   
240-835 7 Clear Spring MD   624H ONVOY SPECTRUM, LLC 240   2022-01-20   
240-835 8 Clear Spring MD   624H ONVOY SPECTRUM, LLC 240   2021-08-04   
240-835 9 Clear Spring MD   624H ONVOY SPECTRUM, LLC 240   2022-01-20   
240-836 A Mount Savage MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-836 2 Mount Savage MD   876D ONVOY, LLC - MD 240   2021-11-01   
240-836 3 Mount Savage MD   516J TON80 COMMUNICATIONS, LLC 240   2021-11-02   
240-836 4 Mount Savage MD   197D VONAGE AMERICA LLC 240   2021-11-02   
240-836 5 Mount Savage MD   876D ONVOY, LLC - MD 240   2021-12-19   
240-836 6 Mount Savage MD   624H ONVOY SPECTRUM, LLC 240   2022-01-20   
240-836 8 Mount Savage MD   624H ONVOY SPECTRUM, LLC 240   2022-01-20   
240-837 A Hughesville MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-837 0 Hughesville MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-837 1 Hughesville MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-05-21   
240-837 2 Hughesville MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-16   
240-837 3 Hughesville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-02-09   
240-837 4 Hughesville MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2014-07-15   
240-837 5 Hughesville MD   508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-12   
240-837 6 Hughesville MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
240-837 7 Hughesville MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-837 8 Hughesville MD   876D ONVOY, LLC - MD 236   2012-10-06   
240-837 9 Hughesville MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
240-838 A Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-838 0 Washington Zone 5 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-838 1 Washington Zone 5 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-838 2 Washington Zone 5 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-03-26   
240-838 3 Washington Zone 5 MD   318J COMCAST IP PHONE, LLC 236   2006-12-29   
240-838 4 Washington Zone 5 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-838 5 Washington Zone 5 MD   318J COMCAST IP PHONE, LLC 236   2006-12-29   
240-838 6 Washington Zone 5 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-838 7 Washington Zone 5 MD   318J COMCAST IP PHONE, LLC 236   2006-12-29   
240-838 8 Washington Zone 5 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-08-03   
240-838 9 Washington Zone 5 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-839 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-839 0 Washington Zone 3 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-03-09   
240-839 1 Washington Zone 3 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-03-01   
240-839 2 Washington Zone 3 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2011-04-02   
240-839 3 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236   2014-09-05   
240-839 4 Washington Zone 3 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2010-06-21   
240-839 5 Washington Zone 3 MD   876D ONVOY, LLC - MD 236   2008-10-05   
240-839 6 Washington Zone 3 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-04-26   
240-839 7 Washington Zone 3 MD   318J COMCAST IP PHONE, LLC 236   2007-08-01   
240-839 8 Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-11-15   
240-839 9 Washington Zone 3 MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-10-17   
240-840 A Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240      
240-840 0 Frederick MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2018-09-20   
240-840 1 Frederick MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2018-09-25   
240-840 2 Frederick MD   551G NUSO, LLC 240   2018-11-07   
240-840 3 Frederick MD   551G NUSO, LLC 240   2018-11-07   
240-840 4 Frederick MD   551G NUSO, LLC 240   2018-11-07   
240-840 5 Frederick MD   551G NUSO, LLC 240   2018-11-07   
240-840 6 Frederick MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2018-10-22   
240-840 7 Frederick MD   5562 METROPCS, INC. 240   2019-07-11   

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

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