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: SNJUCACL2MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
669-301 7 San Jose: South DA CA 197D VONAGE AMERICA LLC 722   2020-07-03   
707-697 1 Santa Rosa CA 197D VONAGE AMERICA LLC 722   2020-06-12   
707-899 7 Santa Rosa CA 197D VONAGE AMERICA LLC 722   2020-06-20   
925-341 6 Livermore CA 197D VONAGE AMERICA LLC 722   2020-06-15   
925-341 7 Livermore CA 197D VONAGE AMERICA LLC 722   2020-06-15   
925-414 6 Concord CA 197D VONAGE AMERICA LLC 722   2019-12-06   
925-488 0 Walnut Creek CA 197D VONAGE AMERICA LLC 722   2020-06-11   
925-488 1 Walnut Creek CA 197D VONAGE AMERICA LLC 722   2020-06-11   
925-694 8 Pleasanton CA 197D VONAGE AMERICA LLC 722   2020-05-29   
925-967 9 Dublin-San Ramon CA 197D VONAGE AMERICA LLC 722   2020-06-19   

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

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