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: SNMNCAXPPSA

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
424-238 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
424-238 9 Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730   2008-01-14   

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

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