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: 310 [Rate centres in NPA 310] [Dial plan for NPA 310]

NXX: 302

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-302 A Santa Monica: Mar Vista DA CA PDRYCAXF82A  2319 FRONTIER CALIFORNIA INC. 730      
310-302 0 Santa Monica: Mar Vista DA CA PDRYCAXF82A  2319 FRONTIER CALIFORNIA INC. 730      
310-302 1 Santa Monica: Mar Vista DA CA PDRYCAXF82A  2319 FRONTIER CALIFORNIA INC. 730      
310-302 2 Santa Monica: Mar Vista DA CA PDRYCAXF82A  2319 FRONTIER CALIFORNIA INC. 730      
310-302 3 Santa Monica: Mar Vista DA CA PDRYCAXF82A  2319 FRONTIER CALIFORNIA INC. 730      
310-302 4 Santa Monica: Mar Vista DA CA PDRYCAXF82A  2319 FRONTIER CALIFORNIA INC. 730      
310-302 5 Santa Monica: Mar Vista DA CA PDRYCAXF82A  2319 FRONTIER CALIFORNIA INC. 730      
310-302 6 Santa Monica: Mar Vista DA CA PDRYCAXF82A  2319 FRONTIER CALIFORNIA INC. 730      
310-302 7 Santa Monica: Mar Vista DA CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2007-10-11   
310-302 8 Santa Monica: Mar Vista DA CA PDRYCAXF82A  2319 FRONTIER CALIFORNIA INC. 730      
310-302 9 Santa Monica: Mar Vista DA CA PDRYCAXF82A  2319 FRONTIER CALIFORNIA INC. 730      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.