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: 512 [Rate centres in NPA 512] [Dial plan for NPA 512]

NXX: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-677 A Georgetown TX AUSUTXZMAMD  6664 SPRINT SPECTRUM L.P. 558      
512-677 0 Georgetown TX   6664 SPRINT SPECTRUM L.P. 558      
512-677 1 Georgetown TX   6664 SPRINT SPECTRUM L.P. 558      
512-677 2 Georgetown TX   6664 SPRINT SPECTRUM L.P. 558      
512-677 3 Georgetown TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2015-02-13   
512-677 4 Georgetown TX   004F BANDWIDTH.COM CLEC, LLC - TX 558   2011-04-28   
512-677 5 Georgetown TX   004F BANDWIDTH.COM CLEC, LLC - TX 558   2011-04-28   
512-677 6 Georgetown TX   004F BANDWIDTH.COM CLEC, LLC - TX 558   2015-02-14   
512-677 7 Georgetown TX   004F BANDWIDTH.COM CLEC, LLC - TX 558   2015-02-14   
512-677 8 Georgetown TX   6664 SPRINT SPECTRUM L.P. 558      
512-677 9 Georgetown TX   004F BANDWIDTH.COM CLEC, LLC - TX 558   2011-04-28   

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

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.