Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Bryant-Willow Lake, SD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
605-625 A CLRKSDXADS0  1651 INTERSTATE TELECOM COOP, INC. - SD 640      
605-628 A CLRKSDXADS0  1651 INTERSTATE TELECOM COOP, INC. - SD 640      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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