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
820-229 3 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2024-11-13   
820-229 9 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2024-10-18   
820-236 0 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2025-01-06   
820-236 2 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2025-01-06   
820-236 3 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2025-01-06   
820-236 4 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2025-01-06   
820-236 5 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2025-01-06   
820-236 6 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2025-01-06   
820-236 7 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2025-01-06   
820-236 8 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2025-01-06   
820-236 9 Santa Barbara CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2025-01-06   
820-244 1 Santa Maria CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2025-11-25   
820-823 9 Santa Ynez CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2023-06-30   
820-899 7 Santa Maria CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2021-03-31   
820-899 8 Santa Maria CA 6010 NEW CINGULAR WIRELESS PCS, LLC 740   2021-03-31   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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