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: 246

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
557-246 A St Louis MO   700J WAVENATION, LLC 520   2026-01-30   
557-246 0 St Louis MO   700J WAVENATION, LLC 520   2026-01-30   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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