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: 937

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-937 A Festus-Crystal City MO FSTSMOYEDS0  9533 SOUTHWESTERN BELL 520      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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