Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 618 [Rate centres in NPA 618] [Dial plan for NPA 618]

NXX: 628

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-628 A O'Fallon IL OFLNILMQDS0  9329 ILLINOIS BELL TEL CO 520      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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