Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-753 6 Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2013-03-09   
240-753 7 Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2013-05-11   
240-753 8 Washington Zone 10 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-08-10   
240-753 9 Washington Zone 10 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2013-06-01   
240-754 A Waldorf MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-754 0 Waldorf MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-754 1 Waldorf MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-754 2 Waldorf MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2012-01-02   
240-754 3 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-01-03   
240-754 4 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-06-27   
240-754 5 Waldorf MD CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236   2012-04-03   
240-754 6 Waldorf MD CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236   2012-04-03   
240-754 7 Waldorf MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2013-09-05   
240-754 8 Waldorf MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-754 9 Waldorf MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-755 A Laurel (Baltimore LATA) MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
240-755 0 Laurel (Baltimore LATA) MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-02-26   
240-755 1 Laurel (Baltimore LATA) MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-08-03   
240-755 2 Laurel (Baltimore LATA) MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-11-04   
240-755 3 Laurel (Baltimore LATA) MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-01-12   
240-755 4 Laurel (Baltimore LATA) MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-04-13   
240-755 5 Laurel (Baltimore LATA) MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-04-21   
240-755 6 Laurel (Baltimore LATA) MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-06-16   
240-755 7 Laurel (Baltimore LATA) MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-10-31   
240-755 8 Laurel (Baltimore LATA) MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-05-01   
240-755 9 Laurel (Baltimore LATA) MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-10-31   
240-756 A Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-756 0 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-07-08   
240-756 1 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-07-08   
240-756 2 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-07-08   
240-756 3 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-07-08   
240-756 4 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-04-10   
240-756 5 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-04-10   
240-756 6 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-04-10   
240-756 7 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-04-10   
240-756 8 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-04-10   
240-756 9 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-04-10   
240-757 A Washington Zone 13 MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-757 0 Washington Zone 13 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2022-10-14   
240-757 1 Washington Zone 13 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-02-18   
240-757 2 Washington Zone 13 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-02-18   
240-757 3 Washington Zone 13 MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-757 4 Washington Zone 13 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2022-03-17   
240-757 5 Washington Zone 13 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2022-03-17   
240-757 6 Washington Zone 13 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-757 7 Washington Zone 13 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-07-05   
240-757 8 Washington Zone 13 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-07-05   
240-757 9 Washington Zone 13 MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-758 A Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-758 0 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-08-03   
240-758 1 Laurel MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2016-07-14   
240-758 2 Laurel MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2016-07-14   
240-758 3 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-08-22   
240-758 4 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-08-22   
240-758 5 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-08-22   
240-758 6 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-04-29   
240-758 7 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-04-29   
240-758 8 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-04-29   
240-758 9 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-04-29   
240-759 A Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
240-759 0 Washington Zone 15 (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-10   
240-759 1 Washington Zone 15 (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-10   
240-759 2 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-05-22   
240-759 3 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-06-16   
240-759 4 Washington Zone 15 (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-01-17   
240-759 5 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2022-01-17   
240-759 6 Washington Zone 15 (Baltimore LATA) MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2022-10-27   
240-759 7 Washington Zone 15 (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-23   
240-759 8 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-08-24   
240-759 9 Washington Zone 15 (Baltimore LATA) MD BLTQMD01BMD  516J TON80 COMMUNICATIONS, LLC 238   2021-11-18   
240-760 A Washington Zone 2 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-760 0 Washington Zone 2 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2015-11-19   
240-760 1 Washington Zone 2 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-02   
240-760 2 Washington Zone 2 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-02   
240-760 3 Washington Zone 2 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-12-14   
240-760 4 Washington Zone 2 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-12-14   
240-760 5 Washington Zone 2 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-12-14   
240-760 6 Washington Zone 2 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2016-04-08   
240-760 7 Washington Zone 2 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2016-04-08   
240-760 8 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2016-02-06   
240-760 9 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2016-02-06   
240-761 A Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-761 0 Laurel MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-10-10   
240-761 1 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2022-06-14   
240-761 2 Laurel MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2021-10-25   
240-761 3 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2021-10-17   
240-761 4 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2021-10-17   
240-761 5 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2021-10-17   
240-761 6 Laurel MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-761 7 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2021-09-03   
240-761 8 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2021-09-03   
240-761 9 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2021-09-03   
240-762 A Washington Zone 2 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-762 0 Washington Zone 2 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2012-10-21   
240-762 1 Washington Zone 2 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2012-10-21   
240-762 2 Washington Zone 2 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2014-09-01   
240-762 3 Washington Zone 2 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2015-05-05   
240-762 4 Washington Zone 2 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-07-18   
240-762 5 Washington Zone 2 MD CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236   2013-09-04   
240-762 6 Washington Zone 2 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-07-04   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.