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: SNLOCA01XFY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
650-955 8 Half Moon Bay CA 516J TON80 COMMUNICATIONS, LLC 722   2021-10-23   
805-619 4 Nipomo CA 516J TON80 COMMUNICATIONS, LLC 740   2021-12-05   
805-787 3 San Luis Obispo CA 516J TON80 COMMUNICATIONS, LLC 740   2022-03-17   
805-887 3 Santa Margarita CA 516J TON80 COMMUNICATIONS, LLC 740   2021-09-23   
805-888 3 Pismo Beach CA 516J TON80 COMMUNICATIONS, LLC 740   2021-10-09   
805-900 A Cayucos CA 516J TON80 COMMUNICATIONS, LLC 740      
805-900 2 Cayucos CA 516J TON80 COMMUNICATIONS, LLC 740   2021-06-27   
805-912 2 Bradley CA 516J TON80 COMMUNICATIONS, LLC 740   2021-10-23   
805-977 3 San Miguel CA 516J TON80 COMMUNICATIONS, LLC 740   2021-10-16   
820-336 6 Guadalupe CA 516J TON80 COMMUNICATIONS, LLC 740   2021-09-16   
820-400 6 Parkfield CA 516J TON80 COMMUNICATIONS, LLC 740   2021-10-30   
820-500 9 Gaviota CA 516J TON80 COMMUNICATIONS, LLC 740   2021-11-05   
820-946 8 Santa Maria CA 516J TON80 COMMUNICATIONS, LLC 740   2021-09-18   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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