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.

NPA: 928 [Rate centres in NPA 928] [Dial plan for NPA 928]

NXX: 665

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-665 A Grand Canyon AZ PHNXAZ19CMD  516J TON80 COMMUNICATIONS, LLC 666      
928-665 5 Grand Canyon AZ   145J TERRA NOVA TELECOM INC. 666   2022-10-31   
928-665 7 Grand Canyon AZ PHNXAZ19CMD  516J TON80 COMMUNICATIONS, LLC 666   2022-04-03   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.