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: OKLDCAAN1KD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-253 A San Francisco: Central DA CA 6630 USA MOBILITY WIRELESS, INC. 722      
415-372 A San Francisco: Central DA CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
415-376 A San Francisco: Central DA CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
415-414 A San Francisco: Central DA CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
415-520 A San Francisco: Central DA CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
415-588 A San Francisco: Central DA CA 6967 33 WIRELESS INC. 722      
415-620 A San Francisco: Central DA CA 6967 33 WIRELESS INC. 722      
415-714 A San Rafael CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
415-718 A Novato CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
415-790 A San Francisco: Central DA CA 9748 AMERICAN MESSAGING SERVICES, LLC 722      
415-791 A San Francisco: Central DA CA 9748 AMERICAN MESSAGING SERVICES, LLC 722      
415-803 A San Francisco: Central DA CA 6967 33 WIRELESS INC. 722      
415-809 A San Francisco: Central DA CA 6630 USA MOBILITY WIRELESS, INC. 722      
415-907 A San Francisco: Central DA CA 6630 USA MOBILITY WIRELESS, INC. 722      
707-250 A Napa CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
707-288 A Santa Rosa CA 6630 USA MOBILITY WIRELESS, INC. 722      
707-417 A Fairfield-Suisun CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
707-519 A Santa Rosa CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
707-581 A Santa Rosa CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
707-821 A Santa Rosa CA 6630 USA MOBILITY WIRELESS, INC. 722      

Last updated: Sat, 10 Oct 2020 02:22:41 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.