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: SNMNCAXGDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
310-260 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-319 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-393 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-394 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-395 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-434 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-451 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-458 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-570 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-570 4 Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-576 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-587 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-656 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-899 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      
310-917 A Santa Monica: Santa Monica DA CA 2319 FRONTIER CALIFORNIA INC. 730      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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