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: 994

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-994 A Sasabe AZ TCSMAZCHFMD  516J TON80 COMMUNICATIONS, LLC 668      
520-994 4 Sasabe AZ TCSMAZCHFMD  516J TON80 COMMUNICATIONS, LLC 668   2022-04-21   
520-994 8 Sasabe AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2022-04-22   
520-994 9 Sasabe AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2022-08-30   

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

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