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: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-221 A Washington MO WASHMOBERS0  9533 SOUTHWESTERN BELL 520      
636-221 0 Washington MO STLTMOBOAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2006-01-15   
636-221 1 Washington MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520      
636-221 2 Washington MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520      
636-221 3 Washington MO WASHMOBERS0  9533 SOUTHWESTERN BELL 520      
636-221 4 Washington MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2006-10-13   
636-221 5 Washington MO STLTMOBOAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2007-09-21   
636-221 6 Washington MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520   2007-10-08   
636-221 7 Washington MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2007-10-01   
636-221 8 Washington MO STLTMOBOAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2008-03-17   
636-221 9 Washington MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2008-08-26   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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