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: 261

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-261 A Huntsville AL HNVIALUNXTZ  829J PAETEC ITEL, LLC 477      
256-261 0 Huntsville AL HNVIALUNXSY  5562 METROPCS, INC. 477   2017-02-08   
256-261 1 Huntsville AL HNVIALUNXTZ  829J PAETEC ITEL, LLC 477      
256-261 2 Huntsville AL HNVIALUNXTZ  829J PAETEC ITEL, LLC 477   2009-08-21   
256-261 3 Huntsville AL HNVIALUNX7Z  318J COMCAST IP PHONE, LLC 477   2016-02-16   
256-261 4 Huntsville AL HNVIALUNXSY  5562 METROPCS, INC. 477   2006-03-23   
256-261 5 Huntsville AL HNVIALUNXSY  5562 METROPCS, INC. 477   2006-04-01   
256-261 6 Huntsville AL HNVIALUNXTZ  829J PAETEC ITEL, LLC 477   2007-01-12   
256-261 7 Huntsville AL HNVIALUNXTZ  829J PAETEC ITEL, LLC 477   2007-01-12   
256-261 8 Huntsville AL   792K CHARTER IP ENABLED SERVICES, LLC 477   2007-10-20   
256-261 9 Huntsville AL HNVIAL03CM4  6744 SOUTHERN COMMUNICATIONS SERVICES, INC. 477      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.