Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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St Jacob, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
618-640 A   792K CHARTER IP ENABLED SERVICES, LLC 520      
618-640 0   792K CHARTER IP ENABLED SERVICES, LLC 520   2018-06-21   
618-640 1 STLSMOWQ8MD  073H TELNYX LLC 520   2020-07-20   
618-640 9 STLSMOGZ00Z  490J BOOST SUBSCRIBERCO L.L.C. 520   2022-08-27   
618-644 A SJCBILXEDS0  1032 HOME TEL. CO. 520      

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

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