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: SNBBCAXFXPX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
805-259 A Santa Barbara CA 6529 T-MOBILE USA, INC. 740      
805-284 A Santa Barbara CA 6529 T-MOBILE USA, INC. 740      
805-294 A Lompoc CA 6529 T-MOBILE USA, INC. 740      
805-315 A Lompoc CA 5562 METROPCS, INC. 740      
805-325 A Santa Ynez CA 6529 T-MOBILE USA, INC. 740      
805-637 A Santa Barbara CA 6529 T-MOBILE USA, INC. 740      
805-896 A Santa Barbara CA 6529 T-MOBILE USA, INC. 740      
805-972 A Lompoc CA 6529 T-MOBILE USA, INC. 740      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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