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: 742

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-742 A Elkmont AL   792K CHARTER IP ENABLED SERVICES, LLC 477   2025-03-25   
256-742 0 Elkmont AL   792K CHARTER IP ENABLED SERVICES, LLC 477   2018-09-04   
256-742 1 Elkmont AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477   2020-04-09   
256-742 2 Elkmont AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477   2020-04-09   
256-742 6 Elkmont AL HNVIAL96X5X  516J TON80 COMMUNICATIONS, LLC 477   2022-03-21   
256-742 9 Elkmont AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477   2024-06-01   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.