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: TCSMAZCHCMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-226 2 Sierra Vista AZ 145J TERRA NOVA TELECOM INC. 668   2022-10-18   
520-397 6 Nogales AZ 145J TERRA NOVA TELECOM INC. 668   2022-11-03   
520-552 5 Bisbee AZ 145J TERRA NOVA TELECOM INC. 668   2022-10-22   
520-656 6 Willcox AZ 145J TERRA NOVA TELECOM INC. 668   2023-08-23   
520-750 3 Tucson AZ 145J TERRA NOVA TELECOM INC. 668   2022-10-18   
928-900 A Globe AZ 145J TERRA NOVA TELECOM INC. 668      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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