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: SNLOCA01XFX

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
820-786 4 Atascadero CA 649C ONVOY, LLC - CA 740   2022-11-28   
820-800 1 Cayucos CA 649C ONVOY, LLC - CA 740   2021-07-28   
820-800 7 Cayucos CA 649C ONVOY, LLC - CA 740   2021-05-09   
820-899 2 Santa Maria CA 649C ONVOY, LLC - CA 740   2021-07-28   
820-899 3 Santa Maria CA 649C ONVOY, LLC - CA 740   2021-07-28   
820-899 4 Santa Maria CA 649C ONVOY, LLC - CA 740   2021-07-28   
820-899 5 Santa Maria CA 649C ONVOY, LLC - CA 740   2021-07-28   
820-900 1 Bradley CA 649C ONVOY, LLC - CA 740   2021-07-28   
820-900 2 Bradley CA 649C ONVOY, LLC - CA 740   2020-05-04   
820-900 3 Bradley CA 649C ONVOY, LLC - CA 740   2020-05-04   
820-900 4 Bradley CA 649C ONVOY, LLC - CA 740   2021-08-13   
820-998 A Atascadero CA 649C ONVOY, LLC - CA 740   2024-08-04   
820-998 0 Atascadero CA 649C ONVOY, LLC - CA 740   2024-08-04   

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Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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