Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Grafton, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
618-786 A GFTNILACDS0  1020 GRAFTON TEL. CO. 520      
618-894 A STLSMOGZ00Z  490J BOOST SUBSCRIBERCO L.L.C. 520      
618-894 9 STLSMOGZ00Z  490J BOOST SUBSCRIBERCO L.L.C. 520   2022-12-10   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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