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: 256 [Rate centres in NPA 256] [Dial plan for NPA 256]

NXX: 999

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-999 A Scottsboro AL HNVIALUNXIX  072F BANDWIDTH.COM CLEC, LLC - AL 477      
256-999 0 Scottsboro AL HNVIALUNXIX  072F BANDWIDTH.COM CLEC, LLC - AL 477   2010-09-12   
256-999 1 Scottsboro AL HNVIALUNXZY  073H TELNYX LLC 477   2020-05-02   
256-999 2 Scottsboro AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477   2021-05-06   
256-999 3 Scottsboro AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477   2021-05-06   
256-999 4 Scottsboro AL HNVIAL96X2X  965H FRACTEL LLC 477   2020-07-06   
256-999 5 Scottsboro AL HNVIAL96X2X  965H FRACTEL LLC 477   2020-07-06   
256-999 6 Scottsboro AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477   2021-05-06   
256-999 7 Scottsboro AL HNVIAL96X2X  965H FRACTEL LLC 477   2020-07-06   
256-999 8 Scottsboro AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2021-07-30   
256-999 9 Scottsboro AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2018-09-23   

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.