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: 755

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-755 A Phoenix AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
623-755 0 Phoenix AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2008-10-24   
623-755 1 Phoenix AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2008-10-24   
623-755 2 Phoenix AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2008-10-24   
623-755 3 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2009-01-17   
623-755 4 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2009-01-17   
623-755 5 Phoenix AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2009-03-13   
623-755 6 Phoenix AZ PHNAAZ55DS2  722E YMAX COMMUNICATIONS CORP. - AZ 666   2009-02-06   
623-755 7 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2009-03-09   
623-755 8 Phoenix AZ PHNAAZ55DS2  722E YMAX COMMUNICATIONS CORP. - AZ 666   2009-10-26   
623-755 9 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2009-10-26   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.