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: SNFCCA01DS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-248 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-248 0 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-248 1 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-248 2 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-248 3 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-248 4 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-248 5 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-248 7 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-248 8 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-248 9 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-249 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-262 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-263 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-263 0 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-263 1 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-263 2 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-263 3 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-263 4 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-263 5 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-263 6 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-263 7 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-263 8 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-273 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-273 1 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-273 2 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-273 3 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-273 4 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-273 5 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-273 6 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-273 7 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-273 8 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-274 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-274 0 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-274 1 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-274 2 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-274 3 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-274 5 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-274 6 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-274 7 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-274 8 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-274 9 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-291 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-291 0 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-291 1 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-291 3 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-291 4 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-291 5 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-291 6 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-291 7 San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-291 8 San Francisco: Central DA CA 9740 PACIFIC BELL 722      

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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