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
510-310 A Oakland: Main-Piedmont DA CA 6630 USA MOBILITY WIRELESS, INC. 722   2024-01-30   
510-321 A Oakland: Main-Piedmont DA CA 6630 USA MOBILITY WIRELESS, INC. 722   2024-01-30   
510-716 A Oakland: Main-Piedmont DA CA 6630 USA MOBILITY WIRELESS, INC. 722   2024-01-30   
510-720 A Oakland: Main-Piedmont DA CA 6630 USA MOBILITY WIRELESS, INC. 722   2024-01-30   
650-217 A San Mateo CA 6630 USA MOBILITY WIRELESS, INC. 722      
650-317 A Mountain View CA 6630 USA MOBILITY WIRELESS, INC. 722      
925-213 A Walnut Creek CA 6630 USA MOBILITY WIRELESS, INC. 722      
925-312 A Antioch CA 6630 USA MOBILITY WIRELESS, INC. 722      
925-340 A Walnut Creek CA 6630 USA MOBILITY WIRELESS, INC. 722      
925-920 A Walnut Creek CA 6630 USA MOBILITY WIRELESS, INC. 722      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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