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.

OCN: 857F MCC TELEPHONY OF THE WEST, LLC - CA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
442-294 4 Ridgecrest CA   730   2018-02-09   
442-423 3 Lake Isabella CA   730   2021-01-11   
707-281 6 Kelseyville CA   722   2017-10-30   
707-289 4 Kelseyville CA   722   2010-08-20   
707-348 8 Upper Lake CA   722   2010-09-03   
707-413 3 Lakeport CA   722   2010-08-20   
707-461 4 Lower Lake CA   722   2015-12-24   
707-560 5 Clearlake Oaks CA   722   2010-08-20   
707-600 A Nice CA SNRSCA01LMD  722      
707-600 0 Nice CA   722   2015-05-17   
707-600 1 Nice CA   722   2010-08-20   
707-701 6 Lower Lake CA   722   2010-08-20   
707-730 1 Lakeport CA   722   2018-12-16   
707-809 7 Middletown CA   722   2010-08-20   
707-881 3 Cobb Mountain CA   722   2010-08-20   
760-292 A Pauma Valley CA SNDGCA0238Z  732      
760-292 1 Pauma Valley CA   732   2012-11-30   
760-297 3 Valley Center CA   732   2012-11-30   
760-377 2 Inyokern CA   730   2012-02-03   
760-463 A Ridgecrest CA VTVLCAXAXKX  730      
760-463 1 Ridgecrest CA   730   2012-02-19   
760-478 8 Kernville CA   730   2015-06-06   
760-531 3 Weldon CA   730   2015-06-06   
760-677 2 Ridgecrest CA   730   2013-12-23   
760-812 1 Lake Isabella CA   730   2015-06-06   
951-291 6 Elsinore CA   730   2011-03-18   
951-309 A Sun City CA ONTRCAXPX6Y  730      
951-309 1 Sun City CA   730   2011-04-11   
951-322 A Perris CA ONTRCAXPX6Y  730      
951-322 1 Perris CA   730   2011-04-22   
951-458 9 Sun City CA   730   2016-06-14   
951-878 4 Lakeview-Nuevo CA   730   2011-03-18   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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