Local Calling Guide

Area code/prefix search

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NPA: 837 [Rate centres in NPA 837] [Dial plan for NPA 837]

NXX: 222

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
837-222 A Red Bluff CA   824J OPENTACT INC. 724   2026-10-24   
837-222 2 Red Bluff CA   824J OPENTACT INC. 724   2026-10-24   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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