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: 978

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-978 A Sheffield AL HNVIALUNX0X  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-978 0 Sheffield AL   6664 SPRINT SPECTRUM L.P. 477   2011-04-08   
256-978 1 Sheffield AL   4839 US LEC OF ALABAMA, INC. 477   2011-01-18   
256-978 2 Sheffield AL   5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2010-12-13   
256-978 3 Sheffield AL   5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2010-12-25   
256-978 4 Sheffield AL   072F BANDWIDTH.COM CLEC, LLC - AL 477   2011-06-20   
256-978 5 Sheffield AL   318J COMCAST IP PHONE LLC 477   2011-06-24   
256-978 6 Sheffield AL   8271 TELEPORT COMMUNICATIONS AMERICA, LLC - AL 477   2011-06-20   
256-978 7 Sheffield AL   6664 SPRINT SPECTRUM L.P. 477   2011-10-14   
256-978 8 Sheffield AL   6664 SPRINT SPECTRUM L.P. 477   2012-02-22   
256-978 9 Sheffield AL   072F BANDWIDTH.COM CLEC, LLC - AL 477   2014-03-13   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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