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: 866

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-866 A Phoenix AZ PHNXAZMYDS0  9636 QWEST CORPORATION 666      
623-866 0 Phoenix AZ PHNXAZMYDS0  9636 QWEST CORPORATION 666      
623-866 1 Phoenix AZ PHNXAZMYDS0  9636 QWEST CORPORATION 666      
623-866 2 Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2005-08-08   
623-866 3 Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2005-08-08   
623-866 4 Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666   2003-09-17   
623-866 5 Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666   2003-09-17   
623-866 6 Phoenix AZ BCKYAZMADS0  9636 QWEST CORPORATION 666   2003-09-17   
623-866 7 Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666   2003-09-17   
623-866 8 Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2005-08-08   
623-866 9 Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2005-08-08   

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

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