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: SNLOCA01XEY

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
820-227 8 Santa Maria CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2024-10-16   
820-228 7 Lompoc CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2024-12-26   
820-230 1 Paso Robles CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2025-03-29   
820-230 3 Paso Robles CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2026-07-04   
820-230 7 Paso Robles CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2025-10-16   
820-240 1 Santa Barbara CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2025-05-05   
820-240 2 Santa Barbara CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2026-04-27   
820-240 4 Santa Barbara CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2026-07-11   
820-240 8 Santa Barbara CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2025-06-16   
820-244 3 Santa Maria CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2026-04-10   
820-244 5 Santa Maria CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2026-06-10   
820-300 8 Guadalupe CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2020-03-09   
820-380 0 Pismo Beach CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2023-08-24   
820-380 1 Pismo Beach CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2024-09-08   
820-380 7 Pismo Beach CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2026-06-28   
820-380 8 Pismo Beach CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2024-11-12   
820-587 1 Santa Barbara CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2021-12-13   
820-600 3 Pismo Beach CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2022-02-10   
820-666 8 San Luis Obispo CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2025-02-13   
820-786 8 Atascadero CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2022-07-16   
820-823 0 Santa Ynez CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2023-04-10   
820-880 0 Santa Barbara CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2026-10-16   
820-899 0 Santa Maria CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2021-04-22   
820-899 1 Santa Maria CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2021-07-19   
820-899 6 Santa Maria CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2023-10-21   
820-946 0 Santa Maria CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2022-04-10   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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