Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 636 [Rate centres in NPA 636] [Dial plan for NPA 636]

NXX: 397

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-397 A St Peters MCA4 MO STPRMOXADS1  9787 BRIGHTSPEED OF MISSOURI, LLC 520      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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