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: SIMICACNGT1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-317 A Palmdale: Palmdale DA CA 6529 T-MOBILE USA, INC. 730      
661-373 A Santa Clarita: Newhall-Castaic DA CA 6529 T-MOBILE USA, INC. 730      
661-794 A Palmdale: Palmdale DA CA 6529 T-MOBILE USA, INC. 730   2006-04-15   
661-877 A Santa Clarita: Newhall-Castaic DA CA 6529 T-MOBILE USA, INC. 730      
805-298 A Moorpark CA 6529 T-MOBILE USA, INC. 730      
805-304 A Simi Valley CA 6529 T-MOBILE USA, INC. 730      
818-357 A Northridge CA 6529 T-MOBILE USA, INC. 730      
818-448 A Van Nuys CA 6529 T-MOBILE USA, INC. 730      
818-571 A Van Nuys CA 6529 T-MOBILE USA, INC. 730      
818-633 A Van Nuys CA 6529 T-MOBILE USA, INC. 730      
818-849 A Van Nuys CA 6529 T-MOBILE USA, INC. 730   2006-07-14   
818-915 A North Hollywood CA 6529 T-MOBILE USA, INC. 730      
818-943 A Reseda CA 6529 T-MOBILE USA, INC. 730      

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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