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

NXX: 222

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-222 A Sheffield AL HNVIALUNXIZ  9236 NETWORK TELEPHONE CORPORATION - AL 477      
256-222 0 Sheffield AL HNVIALUNXAZ  553J WHITESKY COMMUNICATIONS, LLC 477   2021-03-28   
256-222 1 Sheffield AL HNVIALUNX2Z  624H ONVOY SPECTRUM, LLC 477   2021-10-27   
256-222 3 Sheffield AL DCTRALGU0MD  349D CHARTER FIBERLINK - ALABAMA, LLC - AL 477   2022-10-02   
256-222 4 Sheffield AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2023-08-11   
256-222 5 Sheffield AL HNVIALUNX2Z  624H ONVOY SPECTRUM, LLC 477   2022-02-19   
256-222 6 Sheffield AL HNVIALUNX2Z  624H ONVOY SPECTRUM, LLC 477   2022-02-19   
256-222 7 Sheffield AL HNVIAL96X5X  516J TON80 COMMUNICATIONS, LLC 477   2022-03-21   
256-222 8 Sheffield AL HNVIALOD4MD  939H COMMIO, LLC 477   2022-12-03   
256-222 9 Sheffield AL HNVIALUNXIZ  9236 NETWORK TELEPHONE CORPORATION - AL 477      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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