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
240-395 8 Washington Zone 2 MD   829J PAETEC ITEL, LLC 236      
240-395 9 Washington Zone 2 MD   829J PAETEC ITEL, LLC 236      
240-396 A Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-396 0 Washington Zone 2 MD   624H ONVOY SPECTRUM, LLC 236   2024-12-05   
240-396 1 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-396 2 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-396 3 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-09-05   
240-396 4 Washington Zone 2 MD   624H ONVOY SPECTRUM, LLC 236   2024-12-05   
240-396 5 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-396 6 Washington Zone 2 MD   318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-396 7 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-02-03   
240-396 8 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-12-16   
240-396 9 Washington Zone 2 MD   876D ONVOY, LLC - MD 236   2024-10-21   
240-397 A Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
240-397 0 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2009-05-07   
240-397 1 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2009-10-02   
240-397 2 Frederick MD   829J PAETEC ITEL, LLC 240   2009-11-04   
240-397 3 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2010-01-19   
240-397 4 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2010-05-03   
240-397 5 Frederick MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-11-29   
240-397 6 Frederick MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-06-26   
240-397 7 Frederick MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2009-11-30   
240-397 8 Frederick MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-02-22   
240-397 9 Frederick MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-02-22   
240-398 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-398 0 Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2002-10-17   
240-398 1 Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-10-11   
240-398 2 Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-10-11   
240-398 3 Washington Zone 3 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-04-03   
240-398 4 Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-10-11   
240-398 5 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236   2004-11-21   
240-398 6 Washington Zone 3 MD   5562 METROPCS, INC. 236      
240-398 7 Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2002-10-17   
240-398 8 Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2002-10-17   
240-398 9 Washington Zone 3 MD   5562 METROPCS, INC. 236   2002-10-17   
240-399 A Washington Zone 10 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-400 A Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-400 0 Washington Zone 2 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-06   
240-400 1 Washington Zone 2 MD   073H TELNYX LLC 236   2023-12-11   
240-400 2 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-400 3 Washington Zone 2 MD   939H COMMIO, LLC 236   2023-12-23   
240-400 4 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-11-04   
240-400 5 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-400 6 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-400 7 Washington Zone 2 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2023-02-03   
240-400 8 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-06-01   
240-400 9 Washington Zone 2 MD   939H COMMIO, LLC 236   2023-12-23   
240-401 A Washington Zone 10 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-402 A Washington Zone 13 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-402 0 Washington Zone 13 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 1 Washington Zone 13 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 2 Washington Zone 13 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 3 Washington Zone 13 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 4 Washington Zone 13 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 5 Washington Zone 13 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 6 Washington Zone 13 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 7 Washington Zone 13 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 8 Washington Zone 13 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 9 Washington Zone 13 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-403 A Washington Zone 10 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-403 0 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236      
240-403 1 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236      
240-403 2 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236      
240-403 3 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236      
240-403 4 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236      
240-403 5 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236      
240-403 6 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236      
240-403 7 Washington Zone 10 MD   318J COMCAST IP PHONE, LLC 236   2008-03-05   
240-403 8 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236      
240-403 9 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236      
240-404 A Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-404 0 Gaithersburg MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-404 1 Gaithersburg MD   9212 VERIZON MARYLAND, INC. 236   2002-07-01   
240-404 2 Gaithersburg MD   9212 VERIZON MARYLAND, INC. 236   2002-07-01   
240-404 3 Gaithersburg MD   9212 VERIZON MARYLAND, INC. 236   2002-07-01   
240-404 4 Gaithersburg MD   9212 VERIZON MARYLAND, INC. 236   2002-07-01   
240-404 5 Gaithersburg MD   9212 VERIZON MARYLAND, INC. 236   2002-07-01   
240-404 6 Gaithersburg MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-404 7 Gaithersburg MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-404 8 Gaithersburg MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2008-06-09   
240-404 9 Gaithersburg MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-405 A Frederick MD   829J PAETEC ITEL, LLC 240   2025-04-01   
240-405 0 Frederick MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2005-04-20   
240-405 1 Frederick MD   829J PAETEC ITEL, LLC 240   2004-09-17   
240-405 2 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2005-09-01   
240-405 3 Frederick MD   5562 METROPCS, INC. 240   2005-09-19   
240-405 4 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2005-08-01   
240-405 5 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2005-08-01   
240-405 6 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2005-12-02   
240-405 7 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2005-12-02   
240-405 8 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2005-12-02   
240-405 9 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2008-02-15   
240-406 A Washington Zone 10 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-406 0 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-11-14   
240-406 1 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236   2010-07-26   
240-406 2 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-09-05   
240-406 3 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-09-05   
240-406 4 Washington Zone 10 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-17   
240-406 5 Washington Zone 10 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-28   
240-406 6 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-02-11   

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

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