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
240-299 3 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-299 4 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-299 5 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-299 6 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-299 7 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-299 8 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-299 9 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-300 A Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-300 0 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-02-05   
240-300 1 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2011-04-21   
240-300 2 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2011-04-21   
240-300 3 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2011-05-21   
240-300 4 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2011-05-04   
240-300 5 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2011-05-04   
240-300 6 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2011-05-04   
240-300 7 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2011-05-04   
240-300 8 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2011-05-04   
240-300 9 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2011-05-04   
240-301 A Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-301 0 Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-04-29   
240-301 1 Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-08-08   
240-301 2 Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-08-08   
240-301 3 Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-10-17   
240-301 4 Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-10-17   
240-301 5 Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-03-04   
240-301 7 Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-05-21   
240-301 8 Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-04-29   
240-301 9 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2020-12-04   
240-302 A Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-302 0 Laurel MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2017-02-04   
240-302 1 Laurel MD BTVLMD12CMA  5562 METROPCS, INC. 236   2017-03-16   
240-302 2 Laurel MD WASHDC126MD  964H BARR TELL USA, INC. 236   2016-11-30   
240-302 3 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2017-03-20   
240-302 4 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-302 5 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-302 6 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-302 7 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-302 8 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-302 9 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-303 A Washington Zone 16 MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-303 0 Washington Zone 16 MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-303 1 Washington Zone 16 MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-303 2 Washington Zone 16 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-02-26   
240-303 3 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2012-10-07   
240-303 4 Washington Zone 16 MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-303 5 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-303 6 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-303 7 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-303 8 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-303 9 Washington Zone 16 MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-304 A Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-304 0 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-05-14   
240-304 1 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-05-14   
240-304 2 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-05-14   
240-304 3 Washington Zone 5 MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2012-09-15   
240-304 4 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-05-13   
240-304 5 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-05-13   
240-304 6 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-02-26   
240-304 7 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2002-10-17   
240-304 8 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2002-10-17   
240-304 9 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2004-02-16   
240-305 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-305 0 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-305 1 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-305 2 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-305 3 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-305 4 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-305 5 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-305 6 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-305 7 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-305 8 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-305 9 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-306 A Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 0 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 1 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 2 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 3 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 4 Gaithersburg MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2022-11-18   
240-306 5 Gaithersburg MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2017-09-19   
240-306 6 Gaithersburg MD BTVLMD12CMA  5562 METROPCS, INC. 236   2018-07-24   
240-306 7 Gaithersburg MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-10-22   
240-306 8 Gaithersburg MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-10-22   
240-306 9 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-307 A Emmitsburg MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2024-12-09   
240-307 0 Emmitsburg MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2017-10-19   
240-307 1 Emmitsburg MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2012-07-15   
240-307 2 Emmitsburg MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-08-10   
240-307 3 Emmitsburg MD FRDRMDFRX7X  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2008-07-01   
240-307 4 Emmitsburg MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-12   
240-307 5 Emmitsburg MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-12   
240-307 6 Emmitsburg MD FRDRMDFRXAX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 240   2014-04-20   
240-307 7 Emmitsburg MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2016-10-26   
240-307 8 Emmitsburg MD HGTWMD530MD  073H TELNYX LLC 240   2017-08-08   
240-308 A Damascus MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-308 0 Damascus MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-308 1 Damascus MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-308 2 Damascus MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-308 3 Damascus MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2013-07-12   
240-308 4 Damascus MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2014-05-11   
240-308 5 Damascus MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-03-11   

<< 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: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.