Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Rock Lake, ND

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
701-266 A LNGDNDXADS2  1636 UNITED TEL. MUTUAL AID CORP. 636      

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

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