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: 394L COMCAST PHONE OF CALIFORNIA, LLC

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
530-399 0 Chico CA   724   2018-09-23   
530-399 3 Chico CA   724   2019-08-17   
530-399 7 Chico CA   724   2020-12-04   
530-399 8 Chico CA   724   2020-12-04   
530-413 9 Paradise CA   724   2008-11-07   
530-434 6 Marysville CA   726   2013-09-18   
530-441 6 Marysville CA   726   2016-11-02   
530-443 A Marysville CA   726      
530-443 2 Marysville CA   726   2015-05-07   
530-446 6 Grass Valley: Main DA CA   726   2014-04-08   
530-450 8 Auburn: Main DA CA   726   2020-08-11   
530-460 A Grass Valley: Main DA CA   726      
530-460 1 Grass Valley: Main DA CA   726   2018-07-13   
530-483 9 Wheatland CA   726   2006-09-30   
530-487 8 Chico CA   724   2014-09-03   
530-497 5 Placerville: West DA CA   726   2015-02-27   
530-499 6 Placerville: West DA CA   726   2019-09-20   
530-503 3 Placerville: South DA CA   726   2009-11-30   
530-556 A Shingle Springs CA   726      
530-556 2 Shingle Springs CA   726   2015-06-08   
530-564 4 Davis CA   726   2008-10-10   
530-564 7 Davis CA   726   2013-05-28   
530-592 3 Chico CA   724   2011-10-01   
530-599 8 Marysville CA   726   2019-03-20   
530-615 4 Grass Valley: Main DA CA   726   2010-05-05   
530-619 A Colusa CA   726      
530-619 0 Colusa CA   726      
530-619 4 Colusa CA   726   2019-05-09   
530-630 2 Chico CA   724   2020-12-04   
530-630 3 Chico CA   724   2020-12-04   
530-636 4 Chico CA   724   2008-10-30   
530-693 4 Oroville CA   724   2006-09-30   
530-695 6 Live Oak CA   726   2006-09-30   
530-702 7 Woodland CA   726   2025-10-26   
530-715 7 Chico CA   724   2019-02-22   
530-746 5 Davis CA   726   2015-10-12   
530-748 3 Placerville: West DA CA   726   2013-01-18   
530-762 0 Paradise CA   724   2011-09-20   
530-762 2 Paradise CA   724   2014-05-29   
530-762 4 Paradise CA   724   2016-10-14   
530-763 4 Marysville CA   726   2008-10-27   
530-763 5 Marysville CA   726   2008-10-27   
530-764 4 Oroville CA   724   2020-12-04   
530-774 2 Chico CA   724   2013-02-08   
530-777 3 Marysville CA   726   2011-09-26   
530-783 3 Paradise CA   724   2020-12-14   
530-783 6 Paradise CA   724   2020-01-18   
530-797 9 Gridley CA   726   2007-07-09   
530-799 3 Marysville CA   726   2020-10-14   
530-799 4 Marysville CA   726   2020-10-14   
530-809 A Chico CA   724      
530-809 0 Chico CA   724   2006-08-31   
530-809 1 Chico CA   724   2006-08-31   
530-809 2 Chico CA   724   2010-10-05   
530-809 4 Chico CA   724   2014-02-07   
530-838 9 Corning CA   724   2007-07-06   
530-854 4 Oroville CA   724   2018-03-01   
530-869 A Biggs CA   724      
530-869 9 Biggs CA   724   2007-07-06   
530-870 8 Marysville CA   726   2007-06-10   
530-923 2 Marysville CA   726   2007-09-21   
530-923 7 Marysville CA   726   2008-03-31   
530-954 A Live Oak CA   726      
530-954 2 Live Oak CA   726   2023-07-15   
530-955 3 Nevada City CA   726   2014-12-12   
530-965 5 Chico CA   724   2017-03-29   
530-975 4 Gridley CA   726   2023-04-03   
530-988 9 Orland CA   724   2007-07-06   
559-201 9 Chowchilla CA   738   2006-09-30   
559-205 2 Visalia CA   728   2016-08-09   
559-207 3 Clovis CA   728   2016-11-07   
559-209 1 Fresno CA   728   2020-10-10   
559-209 7 Fresno CA   728   2020-10-10   
559-209 8 Fresno CA   728   2020-10-10   
559-210 A San Joaquin CA   728      
559-210 5 San Joaquin CA   728   2006-09-30   
559-228 9 Fresno CA   728   2012-12-11   
559-254 A Parlier CA   728      
559-254 5 Parlier CA   728   2006-09-30   
559-258 8 Del Rey CA   728   2006-09-30   
559-283 8 Fresno CA   728   2008-08-19   
559-290 7 Fresno CA   728   2017-01-28   
559-293 3 Fresno CA   728   2017-04-16   
559-293 4 Fresno CA   728   2017-04-16   
559-296 5 Firebaugh CA   728   2006-09-30   
559-314 8 Clovis CA   728   2020-10-12   
559-314 9 Clovis CA   728   2020-10-12   
559-315 5 Dinuba CA   728   2006-09-30   
559-316 7 Fowler CA   728   2006-09-30   
559-318 9 Selma CA   728   2006-09-30   
559-319 5 Fresno CA   728   2020-10-10   
559-319 6 Fresno CA   728   2020-10-10   
559-319 7 Fresno CA   728   2020-10-10   
559-319 8 Fresno CA   728   2018-09-22   
559-321 8 Clovis CA   728   2008-10-28   
559-326 7 Clovis CA   728   2006-09-30   
559-329 5 Tulare CA   728   2006-09-30   
559-343 A Stratford CA   728      
559-343 4 Stratford CA   728   2006-09-30   
559-353 2 Fresno CA   728   2008-08-19   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 >>

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.