Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 256 [Rate centres in NPA 256] [Dial plan for NPA 256]

NXX: 870

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-870 A Madison AL HNVIALUNX6X  604E ONVOY, LLC - AL 477      
256-870 0 Madison AL HNVIALUNXZY  073H TELNYX LLC 477   2021-03-01   
256-870 1 Madison AL HNVIALUNX7Z  318J COMCAST IP PHONE, LLC 477   2022-08-29   
256-870 2 Madison AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2021-01-22   
256-870 3 Madison AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2021-01-22   
256-870 4 Madison AL HNVIALUNX0X  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2019-10-10   
256-870 5 Madison AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2021-01-22   
256-870 6 Madison AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2021-01-22   
256-870 7 Madison AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2021-01-22   
256-870 8 Madison AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2019-10-09   
256-870 9 Madison AL HNVIALUNXSY  7475 POWERTEL BIRMINGHAM LICENSES, INC. 477   2024-10-31   

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

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