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.
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-453 0 Tombstone AZ 939H COMMIO, LLC 668   2021-06-11   
520-503 6 Willcox AZ 939H COMMIO, LLC 668   2022-09-24   
520-506 0 Tombstone AZ 939H COMMIO, LLC 668   2021-06-11   
520-506 8 Tombstone AZ 939H COMMIO, LLC 668   2021-06-11   
520-506 9 Tombstone AZ 939H COMMIO, LLC 668   2021-06-11   
520-526 A Tucson AZ 939H COMMIO, LLC 668      
520-526 6 Tucson AZ 939H COMMIO, LLC 668   2017-06-25   
520-563 8 Benson AZ 939H COMMIO, LLC 668   2021-11-13   
520-563 9 Benson AZ 939H COMMIO, LLC 668   2021-11-13   
520-590 7 Bisbee AZ 939H COMMIO, LLC 668   2022-07-25   
520-606 0 Tucson AZ 939H COMMIO, LLC 668   2022-11-11   
520-606 6 Tucson AZ 939H COMMIO, LLC 668   2022-11-11   
520-606 7 Tucson AZ 939H COMMIO, LLC 668   2022-11-11   
520-606 8 Tucson AZ 939H COMMIO, LLC 668   2022-11-11   
520-608 0 San Manuel AZ 939H COMMIO, LLC 668   2022-07-25   
520-641 9 Benson AZ 939H COMMIO, LLC 668   2022-09-24   
520-646 9 Nogales AZ 939H COMMIO, LLC 668   2022-09-05   
520-654 7 Sierra Vista AZ 939H COMMIO, LLC 668   2024-05-01   
520-657 9 Hayden AZ 939H COMMIO, LLC 668   2022-12-05   
520-659 0 Nogales AZ 939H COMMIO, LLC 668   2022-12-03   
520-659 8 Nogales AZ 939H COMMIO, LLC 668   2022-12-03   
520-659 9 Nogales AZ 939H COMMIO, LLC 668   2022-12-03   
520-681 9 Nogales AZ 939H COMMIO, LLC 668   2024-03-28   
520-702 8 Douglas AZ 939H COMMIO, LLC 668   2022-09-05   
928-320 8 Pima AZ 939H COMMIO, LLC 668   2022-07-28   
928-324 0 Safford AZ 939H COMMIO, LLC 668   2024-03-28   
928-439 0 Duncan AZ 939H COMMIO, LLC 668   2022-07-25   
928-534 4 Safford AZ 939H COMMIO, LLC 668   2022-12-03   
928-534 5 Safford AZ 939H COMMIO, LLC 668   2022-12-03   
928-534 6 Safford AZ 939H COMMIO, LLC 668   2022-12-03   
928-534 8 Safford AZ 939H COMMIO, LLC 668   2022-09-05   
928-701 9 Globe AZ 939H COMMIO, LLC 668   2022-07-28   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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