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: TCSMAZEE0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-592 A Nogales AZ 073H TELNYX LLC 668      
520-592 0 Nogales AZ 073H TELNYX LLC 668   2021-12-05   
520-640 0 Tucson AZ 073H TELNYX LLC 668   2022-06-22   
520-641 0 Benson AZ 073H TELNYX LLC 668   2022-04-22   
520-929 0 Willcox AZ 073H TELNYX LLC 668   2022-04-24   
520-965 0 Tucson AZ 073H TELNYX LLC 668   2022-12-15   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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