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: 681

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-681 A Nogales AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668      
520-681 0 Nogales AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2023-09-10   
520-681 1 Nogales AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2023-10-23   
520-681 2 Nogales AZ TCSNAZMAXMY  732J NUSO, LLC 668   2023-11-27   
520-681 3 Nogales AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2025-02-10   
520-681 4 Nogales AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2023-08-29   
520-681 5 Nogales AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2025-03-21   
520-681 6 Nogales AZ WLCXAZACDS0  183D VALLEY CONNECTIONS, L.L.C. - AZ 668   2024-11-19   
520-681 7 Nogales AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2024-11-26   
520-681 8 Nogales AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2024-02-03   
520-681 9 Nogales AZ TCSMAZCH9MD  939H COMMIO, LLC 668   2024-03-28   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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