Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 928 [Rate centres in NPA 928] [Dial plan for NPA 928]

NXX: 439

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-439 A Duncan AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668      
928-439 0 Duncan AZ TCSMAZCH9MD  939H COMMIO, LLC 668   2022-07-25   
928-439 2 Duncan AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2020-07-06   
928-439 4 Duncan AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2012-04-29   
928-439 7 Duncan AZ TCSMAZCHFMD  516J TON80 COMMUNICATIONS, LLC 668   2022-03-14   
928-439 9 Duncan AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2015-07-14   

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

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