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: 252F WIDE VOICE, LLC - CA

1 2 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
209-255 A Ripon CA MNTCCAXGMMD  738      
209-255 1 Ripon CA MNTCCAXGMMD  738   2011-12-02   
209-647 A Manteca CA MNTCCAXGKMD  738      
209-647 1 Manteca CA MNTCCAXGKMD  738   2010-03-22   
323-323 A Los Angeles: DA 09 CA   730   2025-05-30   
323-323 3 Los Angeles: DA 09 CA   730   2025-05-30   
323-323 4 Los Angeles: DA 09 CA   730   2025-05-30   
341-777 A Hayward CA SNFCCA21XCZ  722      
341-777 7 Hayward CA SNFCCA21XCZ  722   2019-07-22   
341-888 A Fremont-Newark: Main DA CA SNFCCA21XCZ  722      
341-888 8 Fremont-Newark: Main DA CA SNFCCA21XCZ  722   2019-07-29   
369-222 2 Vacaville CA   722   2025-07-28   
369-444 A Santa Rosa CA   722   2025-09-08   
369-444 4 Santa Rosa CA   722   2025-09-08   
369-777 A Sonoma CA SNFCCA21XCZ  722      
369-777 7 Sonoma CA SNFCCA21XCZ  722   2023-09-17   
369-888 A Ferndale CA SNFCCA21XCZ  722      
369-888 8 Ferndale CA SNFCCA21XCZ  722   2023-07-09   
369-999 A Kenwood CA SNFCCA21XCZ  722      
369-999 9 Kenwood CA SNFCCA21XCZ  722   2023-07-09   
415-415 A Sausalito CA   722   2025-08-22   
415-415 4 Sausalito CA   722   2025-08-22   
415-415 7 Sausalito CA   722   2025-08-22   
415-415 8 Sausalito CA   722   2025-08-22   
415-416 A San Francisco: Central DA CA SNFCCA21XCZ  722      
415-416 1 San Francisco: Central DA CA SNFCCA21XCZ  722   2014-01-13   
530-881 A Verdi CA RENONV12XMD  720      
530-881 1 Verdi CA RENONV12XMD  720   2011-07-03   
559-369 A Fresno CA FRSNCA01X3Z  728   2024-01-29   
559-369 1 Fresno CA FRSNCA01X3Z  728   2012-09-09   
559-546 A Sanger CA SNGRCAXFEMD  728      
559-546 1 Sanger CA SNGRCAXFEMD  728   2010-08-02   
559-670 A Hanford CA FRSNCA01X3Z  728      
559-670 1 Hanford CA FRSNCA01X3Z  728   2011-07-07   
559-726 A Reedley CA SNGRCAXFGMD  728      
559-726 1 Reedley CA SNGRCAXFGMD  728   2011-10-12   
619-577 A San Diego: San Diego DA CA SNDGCA0244Z  732      
619-577 1 San Diego: San Diego DA CA SNDGCA0244Z  732   2014-01-13   
619-999 A Rancho Santa Fe CA SNDGCA0244Z  732   2024-11-01   
619-999 9 Rancho Santa Fe CA SNDGCA0244Z  732   2024-11-01   
628-286 A San Francisco: Montrose-Evergreen DA CA SNFCCA21XCZ  722      
628-286 1 San Francisco: Montrose-Evergreen DA CA SNFCCA21XCZ  722   2020-03-26   
661-691 A Bakersfield: Main DA CA   734   2025-12-26   
661-691 1 Bakersfield: Main DA CA   734   2025-12-26   
661-691 2 Bakersfield: Main DA CA   734   2025-12-26   
738-333 A Montebello CA   730   2025-11-30   
738-333 3 Montebello CA   730   2025-11-30   
738-333 4 Montebello CA   730   2025-11-30   
738-333 5 Montebello CA   730   2025-11-30   
738-333 6 Montebello CA   730   2025-11-30   

1 2 >>

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.