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: SCRMCA01XTZ

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
916-926 6 Sacramento: Main DA CA 939H COMMIO, LLC 726   2017-05-15   
916-954 7 Folsom CA 939H COMMIO, LLC 726   2021-10-10   
916-954 8 Folsom CA 939H COMMIO, LLC 726   2021-10-10   
916-954 9 Folsom CA 939H COMMIO, LLC 726   2021-10-10   

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Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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