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: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-203 A Lake Preston SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-203 0 Lake Preston SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-203 1 Lake Preston SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-203 2 Lake Preston SD SXFLSDPS5MD  145J TERRA NOVA TELECOM INC. 640   2024-11-20   
605-203 3 Lake Preston SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-203 4 Lake Preston SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2012-12-19   
605-203 5 Lake Preston SD SXFLSDCOX0X  624H ONVOY SPECTRUM, LLC 640   2024-12-20   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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