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: YERMCAXFRS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
760-254 A Barstow: Yermo DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-254 1 Barstow: Yermo DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-254 2 Barstow: Yermo DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-254 3 Barstow: Yermo DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-254 5 Barstow: Yermo DA CA 4420 FRONTIER CALIFORNIA INC. 730      

Last updated: Sun, 07 Feb 2021 01:52:50 UTC

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