Local Calling Guide

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NPA: 636 [Rate centres in NPA 636] [Dial plan for NPA 636]

NXX: 671

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-671 A High Ridge MCA4 MO HGRGMO57RS2  9533 SOUTHWESTERN BELL 520      
636-671 0 High Ridge MCA4 MO HGRGMO57RS2  9533 SOUTHWESTERN BELL 520      
636-671 1 High Ridge MCA4 MO HGRGMO57RS2  9533 SOUTHWESTERN BELL 520      
636-671 2 High Ridge MCA4 MO MNCHMOAQGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2010-12-17   
636-671 3 High Ridge MCA4 MO HGRGMO57RS2  9533 SOUTHWESTERN BELL 520      
636-671 4 High Ridge MCA4 MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2014-03-08   
636-671 5 High Ridge MCA4 MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2002-11-19   
636-671 6 High Ridge MCA4 MO HGRGMO57RS2  9533 SOUTHWESTERN BELL 520      
636-671 7 High Ridge MCA4 MO   792K CHARTER IP ENABLED SERVICES, LLC 520   2008-08-21   
636-671 8 High Ridge MCA4 MO HGRGMO57RS2  9533 SOUTHWESTERN BELL 520      
636-671 9 High Ridge MCA4 MO   792K CHARTER IP ENABLED SERVICES, LLC 520   2005-10-31   

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

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