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: 223

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-223 A Phoenix AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
623-223 0 Phoenix AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
623-223 1 Phoenix AZ PHNZAZ87PS0  7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-223 2 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-223 3 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-223 4 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-223 5 Phoenix AZ PHNXAZ19DS3  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 666      
623-223 6 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-223 7 Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666      
623-223 8 Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666      
623-223 9 Phoenix AZ PHNXAZ19DS3  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 666      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.