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: 991

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-991 A Ramsey IL STLSMOWQDS2  224C ONVOY, LLC 520      
618-991 0 Ramsey IL STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-01-04   
618-991 2 Ramsey IL STLSMOWQDS2  224C ONVOY, LLC 520   2023-10-23   

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

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