Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 793

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-793 A White Cloud MI GDRPMIBL15Z  516C AT&T CORP. 348      
231-793 3 White Cloud MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348   2005-09-02   
231-793 6 White Cloud MI GDRPMIBL15Z  516C AT&T CORP. 348   2011-08-23   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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