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: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-666 A Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
623-666 0 Phoenix AZ TEMPAZNR7MD  5562 METROPCS, INC. 666      
623-666 1 Phoenix AZ TEMPAZNR7MD  5562 METROPCS, INC. 666      
623-666 2 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-666 3 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-666 4 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
623-666 5 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
623-666 6 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
623-666 7 Phoenix AZ PHNZAZZJDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666      
623-666 8 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
623-666 9 Phoenix AZ PHNXAZ28DS3  630E ONVOY, 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.