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.
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OCN: 7262 XO CALIFORNIA, INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
209-289 A Modesto CA SKTNCA01X8Z  738      
209-289 2 Modesto CA SKTNCA01X8Z  738   2014-12-04   
323-301 A Los Angeles: DA 14 CA SNANCALWDS1  730      
323-301 4 Los Angeles: DA 14 CA SNANCALWDS1  730      
323-305 A Los Angeles: DA 09 CA SNANCALWDS1  730      
323-305 0 Los Angeles: DA 09 CA SNANCALWDS1  730      
323-305 7 Los Angeles: DA 09 CA SNANCALWDS1  730      
408-604 1 Sunnyvale CA FRMTCAEDDS2  722   2012-03-10   
408-664 5 Sunnyvale CA FRMTCAEDDS2  722   2012-06-08   
408-786 A San Jose: North DA CA FRMTCAEDDS2  722      
408-786 0 San Jose: North DA CA FRMTCAEDDS2  722   2005-07-23   
408-900 3 Sunnyvale CA FRMTCAEDDS2  722   2011-05-02   
408-900 4 Sunnyvale CA FRMTCAEDDS2  722   2011-05-02   
408-900 5 Sunnyvale CA FRMTCAEDDS2  722   2011-05-02   
415-815 A San Francisco: Central DA CA FRMTCAEDDS2  722      
424-299 3 Santa Monica: Santa Monica DA CA SNANCALWDS1  730   2014-02-25   
559-943 A Del Rey CA FRSNCA01XGZ  728      
559-943 2 Del Rey CA FRSNCA01XGZ  728   2014-12-06   
707-736 A Annapolis CA FRMTCAEDDS2  722      
707-736 0 Annapolis CA FRMTCAEDDS2  722   2005-06-08   
707-736 8 Annapolis CA FRMTCAEDDS2  722   2005-06-05   
707-736 9 Annapolis CA FRMTCAEDDS2  722   2005-06-05   
760-615 A Pauma Valley CA SNDJCA05DS3  732      
760-615 1 Pauma Valley CA SNDJCA05DS3  732   2006-05-25   
760-615 7 Pauma Valley CA SNDJCA05DS3  732   2007-04-08   
831-218 1 Ben Lomond CA FRMTCAEDDS2  722   2006-09-11   
831-218 4 Ben Lomond CA FRMTCAEDDS2  722   2009-10-19   
858-761 A San Diego: Mira Mesa DA CA SNDJCA05DS3  732      
858-761 9 San Diego: Mira Mesa DA CA SNDJCA05DS3  732      
909-288 0 Claremont-San Dimas CA SNANCALWDS1  730   2011-01-17   
916-868 A Sacramento: Main DA CA RSVLCANLDS4  726      
916-868 0 Sacramento: Main DA CA RSVLCANLDS4  726      
925-290 A Livermore CA FRMTCAEDDS2  722      
925-290 0 Livermore CA FRMTCAEDDS2  722      
925-290 1 Livermore CA FRMTCAEDDS2  722   2005-01-25   
949-237 5 Irvine CA SNANCALWDS1  730   2012-11-16   
949-237 6 Irvine CA SNANCALWDS1  730   2012-11-16   

Last updated: Sun, 06 Oct 2024 02:51:32 UTC

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