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.

Plymouth, CA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
209-245 A PLMOCA11RS0  9740 PACIFIC BELL 738      
209-245 0   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2015-10-31   
209-245 1   9740 PACIFIC BELL 738      
209-245 2   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2016-12-08   
209-245 3   9740 PACIFIC BELL 738      
209-245 4   9740 PACIFIC BELL 738      
209-245 5   9740 PACIFIC BELL 738      
209-245 6   9740 PACIFIC BELL 738      
209-245 7   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2017-07-09   
209-245 8   981E BANDWIDTH.COM CLEC, LLC - CA 738   2009-01-13   
209-245 9   624H ONVOY SPECTRUM, LLC 738   2024-09-01   
209-680 A SKTNCA01XPZ  318J COMCAST IP PHONE, LLC 738      
209-680 0   649C ONVOY, LLC - CA 738      
209-680 1   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2022-02-24   
209-680 2   649C ONVOY, LLC - CA 738   2019-03-08   
209-680 3   649C ONVOY, LLC - CA 738   2013-03-24   
209-680 4   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738   2005-07-30   
209-680 5   649C ONVOY, LLC - CA 738   2019-03-08   
209-680 6   981E BANDWIDTH.COM CLEC, LLC - CA 738   2014-01-10   
209-680 7   073H TELNYX LLC 738   2018-05-10   
209-680 8   649C ONVOY, LLC - CA 738   2016-02-24   
209-680 9   318J COMCAST IP PHONE, LLC 738   2007-07-11   
209-893 A SKTNCA01XFY  649C ONVOY, LLC - CA 738      
209-893 0   649C ONVOY, LLC - CA 738   2016-02-24   
209-893 1   515J IP HORIZON LLC 738      
209-893 2   515J IP HORIZON LLC 738      
209-893 3   649C ONVOY, LLC - CA 738   2013-03-23   
209-893 4   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2017-07-27   
209-893 5   516C AT&T CORP. 738   2011-05-06   
209-893 6   508J CENTURYLINK COMMUNICATIONS, LLC 738   2014-05-13   
209-893 7   649C ONVOY, LLC - CA 738   2011-05-05   
209-893 8   981E BANDWIDTH.COM CLEC, LLC - CA 738   2016-09-22   
209-893 9   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738   2014-06-14   
209-970 A SKTNCA0112Z  388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 738      
209-970 1   073H TELNYX LLC 738   2023-08-27   
209-970 2   624H ONVOY SPECTRUM, LLC 738   2024-09-01   
209-970 3   624H ONVOY SPECTRUM, LLC 738   2024-09-01   
209-970 4   624H ONVOY SPECTRUM, LLC 738   2024-09-01   
209-970 5   388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 738   2022-09-08   
209-970 6   624H ONVOY SPECTRUM, LLC 738   2024-09-01   
209-970 7   624H ONVOY SPECTRUM, LLC 738   2024-09-01   
209-970 8   624H ONVOY SPECTRUM, LLC 738   2023-12-15   
209-970 9   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2023-02-26   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.