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: 398

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-398 A Summit SD NWEFSDXADS1  1674 RC TECHNOLOGIES 640      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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