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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-300 A Beresford SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-300 0 Beresford SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-300 1 Beresford SD   145J TERRA NOVA TELECOM INC. 640   2025-08-01   
605-300 2 Beresford SD SXFLSDCHMMD  5562 METROPCS, INC. 640   2021-05-14   

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

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