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: 742

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-742 A Gray Summit MO GRSMMO55RS2  9533 SOUTHWESTERN BELL 520      
636-742 0 Gray Summit MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2019-05-20   
636-742 1 Gray Summit MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2009-01-17   
636-742 2 Gray Summit MO GRSMMO55RS2  9533 SOUTHWESTERN BELL 520      
636-742 3 Gray Summit MO GRSMMO55RS2  9533 SOUTHWESTERN BELL 520      
636-742 4 Gray Summit MO GRSMMO55RS2  9533 SOUTHWESTERN BELL 520      
636-742 5 Gray Summit MO GRSMMO55RS2  9533 SOUTHWESTERN BELL 520      
636-742 6 Gray Summit MO GRSMMO55RS2  9533 SOUTHWESTERN BELL 520      
636-742 9 Gray Summit MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2019-05-20   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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