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: PHNXAZ197MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
928-508 1 Yuma AZ 939H COMMIO, LLC 666   2024-03-28   
928-508 8 Yuma AZ 939H COMMIO, LLC 666   2024-03-28   
928-593 1 Sedona AZ 939H COMMIO, LLC 666   2021-09-03   
928-593 2 Sedona AZ 939H COMMIO, LLC 666   2021-09-03   
928-593 3 Sedona AZ 939H COMMIO, LLC 666   2021-09-03   
928-596 0 Payson AZ 939H COMMIO, LLC 666   2022-09-05   
928-622 2 Flagstaff AZ 939H COMMIO, LLC 666   2024-03-28   
928-666 5 Flagstaff AZ 939H COMMIO, LLC 666   2024-03-28   
928-732 7 Lake Havasu City AZ 939H COMMIO, LLC 666   2022-07-28   
928-880 8 Kingman AZ 939H COMMIO, LLC 666   2024-03-28   
928-977 1 Yuma AZ 939H COMMIO, LLC 666   2021-09-03   
928-977 3 Yuma AZ 939H COMMIO, LLC 666   2021-09-03   
928-977 4 Yuma AZ 939H COMMIO, LLC 666   2021-09-03   
928-977 5 Yuma AZ 939H COMMIO, LLC 666   2021-09-03   

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

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