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: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 628

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-628 A Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-628 0 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2006-10-14   
520-628 1 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-628 2 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-628 3 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-628 4 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-628 5 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-628 6 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-628 7 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-628 8 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-628 9 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.