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: 8826 LEVEL 3 COMMUNICATIONS, LLC - CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
530-918 2 Mount Shasta CA   724   2011-07-23   
530-918 3 Mount Shasta CA   724   2008-02-13   
530-918 4 Mount Shasta CA   724   2005-08-02   
530-923 A Marysville CA WSCRCAHW3MD  726      
530-923 4 Marysville CA   726   2005-07-23   
530-924 0 Chico CA   724   2009-09-07   
530-924 3 Chico CA   724   2011-06-27   
530-924 4 Chico CA   724   2005-07-25   
530-924 5 Chico CA   724   2013-09-19   
530-924 6 Chico CA   724   2014-10-19   
530-927 5 Quincy CA   724   2005-08-05   
530-931 3 Susanville CA   724   2020-05-09   
530-936 A Orland CA CHICCA017MD  724      
530-936 0 Orland CA   724      
530-936 2 Orland CA   724      
530-937 A Yreka CA CHICCA017MD  724      
530-962 5 Shasta Lake CA   724   2005-08-01   
530-965 9 Chico CA   724      
530-968 4 Elk Creek CA   724   2005-08-01   
530-988 5 Orland CA   724   2005-08-02   
530-994 5 Sierraville CA   724   2005-08-01   
530-999 2 Redding CA   724   2011-09-25   
559-201 6 Chowchilla CA   738   2008-05-08   
559-214 5 Fresno CA   728   2016-08-23   
559-218 5 Fresno CA   728   2023-12-10   
559-226 9 Fresno CA   728   2018-05-13   
559-234 2 Caruthers CA   728   2005-12-09   
559-235 0 Dunlap CA   728      
559-235 2 Dunlap CA   728      
559-235 4 Dunlap CA   728      
559-236 0 Grant Grove CA   728      
559-236 1 Grant Grove CA   728      
559-236 2 Grant Grove CA   728   2006-01-13   
559-239 0 Lindsay CA   728      
559-239 2 Lindsay CA   728      
559-239 4 Lindsay CA   728      
559-242 A Mendota CA FRSMCA150MD  728      
559-242 2 Mendota CA   728   2004-07-16   
559-242 5 Mendota CA   728   2009-08-10   
559-249 6 Orange Cove CA   728   2008-04-28   
559-254 2 Parlier CA   728   2007-12-18   
559-257 A Selma CA FRSMCA150MD  728      
559-257 0 Selma CA   728      
559-257 3 Selma CA   728   2006-08-28   
559-257 4 Selma CA   728   2004-02-29   
559-257 5 Selma CA   728   2006-08-28   
559-286 0 Fresno CA   728   2008-02-12   
559-302 9 Visalia CA   728   2005-11-13   
559-316 0 Fowler CA   728   2006-01-06   
559-316 4 Fowler CA   728   2004-02-29   
559-317 6 Fresno CA   728   2013-01-29   
559-328 1 Avenal CA   728      
559-328 3 Avenal CA   728      
559-332 4 Squaw Valley CA   728   2005-08-05   
559-334 3 Visalia CA   728   2005-11-13   
559-335 4 Grant Grove CA   728   2005-08-02   
559-336 4 Miramonte-Pinehurst CA   728   2005-08-02   
559-339 0 Porterville CA   728   2007-12-19   
559-340 A Dunlap CA FRSMCA150MD  728      
559-340 4 Dunlap CA   728   2005-08-02   
559-344 0 Fowler CA   728      
559-345 0 Lemoore CA   728      
559-358 2 Tulare CA   728   2008-08-14   
559-364 5 San Joaquin CA   728   2021-01-16   
559-366 4 Tulare CA   728   2005-08-02   
559-366 6 Tulare CA   728   2011-08-29   
559-369 2 Fresno CA   728   2013-03-10   
559-370 A Three Rivers CA FRSMCA150MD  728      
559-370 4 Three Rivers CA   728   2005-08-02   
559-374 0 Fresno CA   728   2013-07-01   
559-380 0 Hanford CA   728      
559-380 3 Hanford CA   728      
559-385 A Fresno CA FRSMCA150MD  728      
559-385 2 Fresno CA   728   2013-08-18   
559-387 5 Clovis CA   728   2014-03-01   
559-388 5 Fresno CA   728   2021-03-30   
559-389 7 Fresno CA   728   2008-02-21   
559-396 A Fresno CA FRSMCA150MD  728      
559-396 3 Fresno CA   728   2014-02-15   
559-396 4 Fresno CA   728   2014-02-15   
559-397 A Dinuba CA FRSMCA150MD  728      
559-397 0 Dinuba CA   728      
559-398 A Badger CA FRSMCA150MD  728      
559-398 4 Badger CA   728   2005-07-26   
559-399 A Sanger CA FRSMCA150MD  728      
559-399 0 Sanger CA   728   2005-01-14   
559-399 2 Sanger CA   728   2008-02-14   
559-399 4 Sanger CA   728      
559-400 7 Fresno CA   728   2013-10-28   
559-400 8 Fresno CA   728   2013-10-28   
559-408 5 Fresno CA   728   2008-07-30   
559-412 5 Fresno CA   728   2007-12-04   
559-415 6 Hanford CA   728   2008-02-15   
559-419 5 Kingsburg CA   728   2008-04-28   
559-421 9 Fresno CA   728   2010-06-12   
559-422 5 Laton CA   728   2008-05-16   
559-423 8 Lemoore CA   728   2008-08-14   
559-427 5 Pixley CA   728   2005-08-02   
559-440 6 Fresno CA   728   2004-09-02   
559-472 A Clovis CA FRSMCA150MD  728      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 >>

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.