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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
805-979 6 Santa Barbara CA 6529 T-MOBILE USA, INC. 740   2012-10-07   
820-218 8 Lompoc CA 6529 T-MOBILE USA, INC. 740   2023-09-22   
820-587 3 Santa Barbara CA 6529 T-MOBILE USA, INC. 740   2022-06-12   
820-587 4 Santa Barbara CA 6529 T-MOBILE USA, INC. 740   2022-06-12   
820-758 1 Santa Barbara CA 6529 T-MOBILE USA, INC. 740   2021-06-11   
820-758 2 Santa Barbara CA 6529 T-MOBILE USA, INC. 740   2021-06-11   
820-758 8 Santa Barbara CA 6529 T-MOBILE USA, INC. 740   2020-09-20   
820-758 9 Santa Barbara CA 6529 T-MOBILE USA, INC. 740   2020-09-20   
820-823 1 Santa Ynez CA 6529 T-MOBILE USA, INC. 740   2024-06-26   

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Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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