Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 557 [Rate centres in NPA 557] [Dial plan for NPA 557]

NXX: 234

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
557-234 A St Louis MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-05-09   
557-234 8 St Louis MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-05-09   
557-234 9 St Louis MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-05-09   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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