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: 623 [Rate centres in NPA 623] [Dial plan for NPA 623]

NXX: 471

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-471 A Phoenix AZ BCKYAZMADS0  9636 QWEST CORPORATION 666      
623-471 0 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2019-12-02   
623-471 1 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2019-11-07   
623-471 2 Phoenix AZ BCKYAZMADS0  9636 QWEST CORPORATION 666   2019-09-25   
623-471 3 Phoenix AZ BCKYAZMADS0  9636 QWEST CORPORATION 666   2019-09-25   
623-471 4 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2019-10-12   
623-471 5 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2019-10-12   
623-471 6 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2019-10-12   
623-471 7 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2019-11-07   
623-471 8 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2019-11-07   
623-471 9 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2019-11-07   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.