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: 517

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-517 A Valley Park MO VYPKMO64DS0  9533 SOUTHWESTERN BELL 520      
636-517 0 Valley Park MO   9533 SOUTHWESTERN BELL 520      
636-517 1 Valley Park MO   516C AT&T CORP. 520   2006-06-30   
636-517 2 Valley Park MO   624H ONVOY SPECTRUM, LLC 520   2025-01-11   
636-517 3 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-517 4 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-517 5 Valley Park MO   829J PAETEC ITEL, LLC 520   2012-01-15   
636-517 6 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-517 7 Valley Park MO   6529 T-MOBILE USA, INC. 520   2024-06-19   
636-517 8 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-517 9 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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