Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-256 A Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-256 0 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-256 1 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-256 2 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-256 3 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-256 4 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-256 5 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-256 6 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-256 7 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-256 8 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-256 9 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      

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

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