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: 236

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-236 A Sierra Vista AZ TCSMAZOI3MD  5562 METROPCS, INC. 668      
520-236 0 Sierra Vista AZ TCSMAZOI3MD  5562 METROPCS, INC. 668   2014-09-26   
520-236 1 Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2005-08-06   
520-236 2 Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2006-06-26   
520-236 3 Sierra Vista AZ TCSMAZOI3MD  5562 METROPCS, INC. 668   2005-03-13   
520-236 4 Sierra Vista AZ TCSMAZOI3MD  5562 METROPCS, INC. 668   2005-01-28   
520-236 5 Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2005-01-28   
520-236 6 Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2004-12-14   
520-236 7 Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2004-11-06   
520-236 8 Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2004-11-06   
520-236 9 Sierra Vista AZ TCSMAZOI3MD  5562 METROPCS, INC. 668   2004-11-06   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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