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: BCKYAZMADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
623-230 5 Phoenix AZ 9636 QWEST CORPORATION 666   2017-04-20   
623-230 6 Phoenix AZ 9636 QWEST CORPORATION 666   2017-04-20   
623-327 A Phoenix AZ 9636 QWEST CORPORATION 666      
623-327 0 Phoenix AZ 9636 QWEST CORPORATION 666      
623-327 1 Phoenix AZ 9636 QWEST CORPORATION 666      
623-327 2 Phoenix AZ 9636 QWEST CORPORATION 666      
623-327 3 Phoenix AZ 9636 QWEST CORPORATION 666      
623-327 9 Phoenix AZ 9636 QWEST CORPORATION 666   2004-12-30   
623-386 A Phoenix AZ 9636 QWEST CORPORATION 666      
623-393 2 Phoenix AZ 9636 QWEST CORPORATION 666      
623-393 3 Phoenix AZ 9636 QWEST CORPORATION 666      
623-393 4 Phoenix AZ 9636 QWEST CORPORATION 666      
623-393 5 Phoenix AZ 9636 QWEST CORPORATION 666      
623-393 6 Phoenix AZ 9636 QWEST CORPORATION 666      
623-393 7 Phoenix AZ 9636 QWEST CORPORATION 666      
623-471 A Phoenix AZ 9636 QWEST CORPORATION 666      
623-471 2 Phoenix AZ 9636 QWEST CORPORATION 666   2019-09-25   
623-471 3 Phoenix AZ 9636 QWEST CORPORATION 666   2019-09-25   
623-691 6 Phoenix AZ 9636 QWEST CORPORATION 666      
623-866 6 Phoenix AZ 9636 QWEST CORPORATION 666   2003-09-17   

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

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