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.

Switch: ANHMCANGDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
424-291 3 Santa Monica: Santa Monica DA CA 4733 PAETEC COMMUNICATIONS, INC. - CA 730   2014-01-31   
424-581 3 Santa Monica: Santa Monica DA CA 4733 PAETEC COMMUNICATIONS, INC. - CA 730   2016-07-22   
657-800 4 Garden Grove CA 4733 PAETEC COMMUNICATIONS, INC. - CA 730   2013-03-08   
747-241 1 Burbank: Burbank DA CA 4733 PAETEC COMMUNICATIONS, INC. - CA 730   2015-06-01   

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

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