Local Calling Guide

Area code/prefix search

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NPA: 605 [Rate centres in NPA 605] [Dial plan for NPA 605]

NXX: 487

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-487 A Lake Andes SD LKANSDXARS1  1660 FORT RANDALL TELCO DBA MT RUSHMORE TELEPHONE CO 640      

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

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