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: 870

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-870 A Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-870 0 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-870 1 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-870 2 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-870 3 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-870 4 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-870 5 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-870 6 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-870 7 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-870 8 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-870 9 Tucson AZ   5562 METROPCS, INC. 668      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.