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: 234

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-234 A Phoenix AZ DRVYAZNODS0  9636 QWEST CORPORATION 666      
623-234 0 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2008-06-05   
623-234 1 Phoenix AZ PHNAAZ55DS2  722E YMAX COMMUNICATIONS CORP. - AZ 666   2008-03-30   
623-234 2 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2008-02-29   
623-234 3 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2008-02-29   
623-234 4 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2008-02-29   
623-234 5 Phoenix AZ DRVYAZNODS0  9636 QWEST CORPORATION 666   2008-01-30   
623-234 6 Phoenix AZ DRVYAZNODS0  9636 QWEST CORPORATION 666   2008-01-30   
623-234 7 Phoenix AZ DRVYAZNODS0  9636 QWEST CORPORATION 666   2008-01-30   
623-234 8 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2008-02-29   
623-234 9 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2008-02-29   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.