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: 753

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-753 A Portage des Sioux MO PRSXMO68RS0  9533 SOUTHWESTERN BELL 520      
636-753 2 Portage des Sioux MO   9533 SOUTHWESTERN BELL 520      
636-753 7 Portage des Sioux MO   508J CENTURYLINK COMMUNICATIONS, LLC 520   2014-07-22   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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