Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Worthing, SD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
605-372 A LNNXSDXARS1  1652 CLARITY TELECOM, LLC DBA BLUEPEAK 640      
605-506 A SXFLSDPS8MD  490J BOOST SUBSCRIBERCO L.L.C. 640      
605-506 9 SXFLSDPS8MD  490J BOOST SUBSCRIBERCO L.L.C. 640   2022-10-02   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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