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
240-407 1 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-04-28   
240-407 2 Washington Zone 16 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-407 3 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-04-02   
240-407 5 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-407 6 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-407 7 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2011-04-23   
240-407 8 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-04-02   
240-408 A Washington Zone 10 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-408 0 Washington Zone 10 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-12-12   
240-408 1 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-12-03   
240-408 2 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-12-03   
240-408 3 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236   2010-08-11   
240-408 4 Washington Zone 10 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
240-408 5 Washington Zone 10 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
240-408 6 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-12-03   
240-408 7 Washington Zone 10 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-03-15   
240-408 8 Washington Zone 10 MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-08-06   
240-408 9 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2012-12-10   
240-409 A Frederick MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
240-410 A Cumberland MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
240-410 0 Cumberland MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2021-08-27   
240-410 1 Cumberland MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-05-21   
240-410 2 Cumberland MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2021-05-24   
240-410 3 Cumberland MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2021-08-27   
240-410 4 Cumberland MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2022-11-16   
240-410 5 Cumberland MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-07-11   
240-410 6 Cumberland MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-07-11   
240-410 7 Cumberland MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2021-05-30   
240-410 8 Cumberland MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2021-05-30   
240-410 9 Cumberland MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2021-03-15   
240-412 A Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-412 0 Waldorf MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2007-01-22   
240-412 1 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2004-08-04   
240-412 2 Waldorf MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2007-09-13   
240-412 3 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2007-07-06   
240-412 4 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2007-07-06   
240-412 5 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2007-07-06   
240-412 6 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2008-02-20   
240-412 7 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2006-08-07   
240-412 8 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236   2004-04-23   
240-412 9 Waldorf MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-413 A Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-413 0 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-413 1 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-08-14   
240-413 2 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-413 3 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-413 4 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-06-05   
240-413 5 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-08-25   
240-413 6 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-413 7 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-12-15   
240-413 8 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-02-08   
240-413 9 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-414 A Washington Zone 6 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-414 0 Washington Zone 6 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-06-26   
240-414 1 Washington Zone 6 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-06-26   
240-414 2 Washington Zone 6 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-06-26   
240-414 3 Washington Zone 6 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-06-26   
240-414 4 Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-04-30   
240-414 5 Washington Zone 6 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2020-08-26   
240-414 6 Washington Zone 6 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2020-04-15   
240-414 7 Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-01-02   
240-414 8 Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-414 9 Washington Zone 6 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-415 A Frederick MD FRDRMDLH7MD  281E YMAX COMMUNICATIONS CORP. - MD 240      
240-415 0 Frederick MD FRDRMDLH7MD  281E YMAX COMMUNICATIONS CORP. - MD 240   2009-01-30   
240-415 1 Frederick MD FRDRMDLH7MD  281E YMAX COMMUNICATIONS CORP. - MD 240   2009-01-30   
240-415 2 Frederick MD FRDRMDLH7MD  281E YMAX COMMUNICATIONS CORP. - MD 240   2009-01-30   
240-415 3 Frederick MD FRDRMDLH7MD  281E YMAX COMMUNICATIONS CORP. - MD 240   2009-01-30   
240-415 4 Frederick MD FRDRMDLH7MD  281E YMAX COMMUNICATIONS CORP. - MD 240   2009-01-30   
240-415 5 Frederick MD MRBGWVBUHPA  4095 FIBERNET, LLC - WV 240   2011-01-06   
240-415 6 Frederick MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2011-09-01   
240-415 7 Frederick MD   829J PAETEC ITEL, LLC 240   2011-02-28   
240-415 8 Frederick MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-06-02   
240-415 9 Frederick MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-06-02   
240-416 A Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 0 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 1 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 2 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 3 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 4 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 5 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 6 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 7 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 8 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-06-27   
240-416 9 Waldorf MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2008-12-13   
240-417 A Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-417 0 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-417 1 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-417 2 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-417 3 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-417 4 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-417 5 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-417 6 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-417 7 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-417 8 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-417 9 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-418 A Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-418 0 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-418 1 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-418 2 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      

<< 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: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.