Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 605 [Rate centres in NPA 605] [Dial plan for NPA 605]

NXX: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-579 A Howard SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-579 0 Howard SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640   2005-08-01   
605-579 9 Howard SD   145J TERRA NOVA TELECOM INC. 640   2025-08-01   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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