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

<< 1 2 3 4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
820-587 2 Santa Barbara CA 649C ONVOY, LLC - CA 740   2022-01-02   
820-600 1 Pismo Beach CA 649C ONVOY, LLC - CA 740   2021-07-28   
820-600 2 Pismo Beach CA 649C ONVOY, LLC - CA 740   2021-07-28   
820-758 7 Santa Barbara CA 649C ONVOY, LLC - CA 740   2021-07-28   
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   

<< 1 2 3 4

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.