Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
309-355 A BLTNILXDXPX  846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 366      
309-355 1 BLTNILXDXPX  846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 366   2019-07-12   
309-355 5   145J TERRA NOVA TELECOM INC. 366   2025-05-27   
309-747 A GRDLILXDDS0  1023 GRIDLEY TEL. CO. 366      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: ISP Telecom

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