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.

NPA: 707 [Rate centres in NPA 707] [Dial plan for NPA 707]

NXX: 336

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
707-336 A Petrolia CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
707-336 0 Petrolia CA   683G BCM ONE CLOUD COMMUNICATIONS, LLC 722      
707-336 1 Petrolia CA   073H TELNYX LLC 722   2020-05-10   
707-336 2 Petrolia CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-02-25   
707-336 3 Petrolia CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
707-336 4 Petrolia CA   649C ONVOY, LLC - CA 722   2021-08-13   
707-336 5 Petrolia CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722      
707-336 6 Petrolia CA   624H ONVOY SPECTRUM, LLC 722   2025-01-30   
707-336 7 Petrolia CA   508J CENTURYLINK COMMUNICATIONS, LLC 722   2015-03-19   
707-336 8 Petrolia CA   649C ONVOY, LLC - CA 722   2010-11-28   
707-336 9 Petrolia CA   649C ONVOY, LLC - CA 722   2021-04-02   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.