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: 646

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-646 A Nogales AZ TCSMAZCHFMD  516J TON80 COMMUNICATIONS, LLC 668      
520-646 0 Nogales AZ   6529 T-MOBILE USA, INC. 668   2022-05-20   
520-646 1 Nogales AZ   6529 T-MOBILE USA, INC. 668   2022-05-20   
520-646 2 Nogales AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2022-10-26   
520-646 3 Nogales AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2022-10-26   
520-646 4 Nogales AZ   516J TON80 COMMUNICATIONS, LLC 668   2022-04-21   
520-646 5 Nogales AZ   6529 T-MOBILE USA, INC. 668   2022-10-11   
520-646 6 Nogales AZ   6529 T-MOBILE USA, INC. 668   2022-10-11   
520-646 7 Nogales AZ   6529 T-MOBILE USA, INC. 668   2022-10-11   
520-646 8 Nogales AZ   073H TELNYX LLC 668   2022-08-29   
520-646 9 Nogales AZ   939H COMMIO, LLC 668   2022-09-05   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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