Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 314 [Rate centres in NPA 314] [Dial plan for NPA 314]

NXX: 839

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
314-839 A Ladue MO STLSMO40RPA  9533 SOUTHWESTERN BELL 520      

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

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