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-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
831-267 A Big Sur CA 748D MPOWER NETWORKS SERVICES INC. - CA 736   2007-02-02   
831-737 A Salinas CA 7453 U.S. TELEPACIFIC CORP. - CA 736   2006-05-19   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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