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: 648

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-648 A Portage des Sioux MO   145J TERRA NOVA TELECOM INC. 520   2025-04-13   
636-648 3 Portage des Sioux MO   145J TERRA NOVA TELECOM INC. 520   2023-08-06   
636-648 8 Portage des Sioux MO STLSMOGZLMD  490J DISH WIRELESS, LLC 520   2022-09-09   

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

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