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: 363

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-363 A Maxville MO STLSMO05XKX  9748 AMERICAN MESSAGING SERVICES, LLC 520     2025-05-18 

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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