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: 209 [Rate centres in NPA 209] [Dial plan for NPA 209]

NXX: 881

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
209-881 A Knights Ferry CA KNFYCA11RS0  9740 PACIFIC BELL 738      
209-881 0 Knights Ferry CA   9740 PACIFIC BELL 738      
209-881 1 Knights Ferry CA   9740 PACIFIC BELL 738      
209-881 2 Knights Ferry CA   073H TELNYX LLC 738   2018-05-10   
209-881 3 Knights Ferry CA   9740 PACIFIC BELL 738      
209-881 4 Knights Ferry CA   649C ONVOY, LLC - CA 738   2013-03-22   
209-881 5 Knights Ferry CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 738   2015-09-04   
209-881 6 Knights Ferry CA   508J CENTURYLINK COMMUNICATIONS, LLC 738   2014-05-13   
209-881 7 Knights Ferry CA   981E BANDWIDTH.COM CLEC, LLC - CA 738   2009-02-23   
209-881 8 Knights Ferry CA   649C ONVOY, LLC - CA 738   2016-02-24   
209-881 9 Knights Ferry CA   649C ONVOY, LLC - CA 738   2016-02-24   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.