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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
240-771 2 Poolesville MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-07-01   
240-771 3 Poolesville MD   876D ONVOY, LLC - MD 236   2016-08-05   
240-771 4 Poolesville MD   876D ONVOY, LLC - MD 236   2016-08-05   
240-771 5 Poolesville MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2018-02-02   
240-771 6 Poolesville MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-07-01   
240-771 7 Poolesville MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-07-01   
240-771 8 Poolesville MD   073H TELNYX LLC 236   2017-04-27   
240-771 9 Poolesville MD   515J IP HORIZON LLC 236   2016-05-31   
240-772 A Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
240-772 0 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2012-01-19   
240-772 1 Frederick MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2012-10-12   
240-772 2 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2013-11-01   
240-772 3 Frederick MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2012-08-29   
240-772 4 Frederick MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2012-10-18   
240-772 5 Frederick MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2012-10-07   
240-772 6 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2014-07-01   
240-772 7 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2014-09-01   
240-772 8 Frederick MD   5562 METROPCS, INC. 240   2013-08-15   
240-772 9 Frederick MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2014-06-21   
240-773 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-774 A Lonaconing MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240      
240-774 0 Lonaconing MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-12-03   
240-774 1 Lonaconing MD   876D ONVOY, LLC - MD 240   2016-09-12   
240-774 2 Lonaconing MD   876D ONVOY, LLC - MD 240   2016-09-12   
240-774 3 Lonaconing MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-774 4 Lonaconing MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-774 5 Lonaconing MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-774 6 Lonaconing MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2019-03-29   
240-774 7 Lonaconing MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2016-11-12   
240-774 8 Lonaconing MD   073H TELNYX LLC 240   2017-08-08   
240-775 A Westernport MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240      
240-775 0 Westernport MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-12-03   
240-775 1 Westernport MD   876D ONVOY, LLC - MD 240   2016-09-13   
240-775 2 Westernport MD   876D ONVOY, LLC - MD 240   2016-09-13   
240-775 3 Westernport MD   876D ONVOY, LLC - MD 240   2017-12-14   
240-775 4 Westernport MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-775 5 Westernport MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-775 6 Westernport MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-775 7 Westernport MD   508J CENTURYLINK COMMUNICATIONS, LLC 240   2016-11-12   
240-775 8 Westernport MD   073H TELNYX LLC 240   2017-08-08   
240-775 9 Westernport MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2019-06-21   
240-776 A La Plata MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-776 0 La Plata MD   624H ONVOY SPECTRUM, LLC 236   2021-12-11   
240-776 1 La Plata MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-02   
240-776 2 La Plata MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-22   
240-776 3 La Plata MD   876D ONVOY, LLC - MD 236   2021-12-23   
240-776 4 La Plata MD   318J COMCAST IP PHONE, LLC 236   2007-09-20   
240-776 5 La Plata MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-08-15   
240-776 6 La Plata MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-08-01   
240-776 7 La Plata MD   876D ONVOY, LLC - MD 236   2024-03-03   
240-776 8 La Plata MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2008-05-16   
240-777 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-778 A Washington Zone 10 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-778 0 Washington Zone 10 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-778 1 Washington Zone 10 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-778 2 Washington Zone 10 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-778 3 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
240-778 4 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
240-778 5 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
240-778 6 Washington Zone 10 MD   876D ONVOY, LLC - MD 236   2008-10-05   
240-778 7 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-07-17   
240-778 8 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
240-778 9 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
240-779 A Ashton MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-779 0 Ashton MD   829J PAETEC ITEL, LLC 236      
240-779 1 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-10-27   
240-779 2 Ashton MD   829J PAETEC ITEL, LLC 236      
240-779 3 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-10-27   
240-779 4 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-10-27   
240-779 5 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-07-22   
240-779 6 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-07-22   
240-779 7 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-03-23   
240-779 8 Ashton MD   829J PAETEC ITEL, LLC 236      
240-779 9 Ashton MD   829J PAETEC ITEL, LLC 236      
240-780 A Gaithersburg MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-780 0 Gaithersburg MD   515J IP HORIZON LLC 236   2013-09-07   
240-780 1 Gaithersburg MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-14   
240-780 2 Gaithersburg MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-11-29   
240-780 3 Gaithersburg MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-780 4 Gaithersburg MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-780 5 Gaithersburg MD   876D ONVOY, LLC - MD 236   2021-07-12   
240-780 6 Gaithersburg MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-14   
240-780 7 Gaithersburg MD   318J COMCAST IP PHONE, LLC 236   2012-10-07   
240-780 8 Gaithersburg MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-19   
240-780 9 Gaithersburg MD   939H COMMIO, LLC 236   2021-07-12   
240-781 A Washington Zone 2 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-781 0 Washington Zone 2 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-12-14   
240-781 1 Washington Zone 2 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-12-14   
240-781 2 Washington Zone 2 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-12-14   
240-781 3 Washington Zone 2 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-10-02   
240-781 4 Washington Zone 2 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-11-06   
240-781 5 Washington Zone 2 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-11-06   
240-781 6 Washington Zone 2 MD   876D ONVOY, LLC - MD 236   2017-05-23   
240-781 7 Washington Zone 2 MD   508J CENTURYLINK COMMUNICATIONS, LLC 236   2016-03-28   
240-781 8 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2015-11-27   
240-781 9 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2015-11-27   
240-782 A Damascus MD   876D ONVOY, LLC - MD 236      
240-782 1 Damascus MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-07-11   
240-782 2 Damascus MD   876D ONVOY, LLC - MD 236   2014-10-24   
240-782 3 Damascus MD   876D ONVOY, LLC - MD 236   2014-10-24   

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

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