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.

Switch: SNFCCA21XEZ

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-231 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-233 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-237 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-301 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-305 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-308 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-322 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-388 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-397 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-407 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-485 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-488 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-552 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-619 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-631 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-787 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-788 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-798 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-814 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-815 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-820 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-860 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-870 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-932 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-948 A San Jose: West DA CA 6630 SPOK, INC. 722   2024-01-30   
408-949 A San Jose: West DA CA 6630 SPOK, INC. 722      
408-951 A San Jose: West DA CA 6630 SPOK, INC. 722      
415-207 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-210 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-219 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-220 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-224 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-245 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-253 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-270 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-280 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-303 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-313 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-443 A San Francisco: Juniper DA CA 6630 SPOK, INC. 722      
415-540 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-560 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-607 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-698 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-708 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-709 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-739 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-804 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
415-809 A San Francisco: Central DA CA 6630 SPOK, INC. 722      
510-212 A Fremont-Newark: Oliver DA CA 6630 SPOK, INC. 722      
510-218 A Fremont-Newark: Oliver DA CA 6630 SPOK, INC. 722      

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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