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: 573

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-573 A Town Creek AL HNVIAL03DS0  4615 DELTACOM, INC. - AL 477      
256-573 0 Town Creek AL HNVIAL03DS0  4615 DELTACOM, INC. - AL 477      
256-573 1 Town Creek AL HNVIALUNXIX  072F BANDWIDTH.COM CLEC, LLC - AL 477   2013-12-12   
256-573 2 Town Creek AL HNVIAL03DS0  4615 DELTACOM, INC. - AL 477      
256-573 3 Town Creek AL ATLNGABUXZY  072F BANDWIDTH.COM CLEC, LLC - AL 477   2015-05-10   
256-573 4 Town Creek AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2016-03-14   
256-573 5 Town Creek AL HNVIAL967MD  516C AT&T CORP. 477   2011-09-28   
256-573 6 Town Creek AL HNVIAL03DS0  4615 DELTACOM, INC. - AL 477      
256-573 7 Town Creek AL HNVIALUNXJY  508J CENTURYLINK COMMUNICATIONS LLC 477   2014-07-16   
256-573 8 Town Creek AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2016-03-14   
256-573 9 Town Creek AL HNVIALUNXIX  072F BANDWIDTH.COM CLEC, LLC - AL 477   2016-07-17   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.