Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 217 [Rate centres in NPA 217] [Dial plan for NPA 217]

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-312 A Owaneco IL MTONILXC1MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 976      
217-312 0 Owaneco IL   073H TELNYX LLC 976   2022-08-19   
217-312 2 Owaneco IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 976   2017-10-28   
217-312 4 Owaneco IL   197H COMPUTER TECHNIQUES, INC. - IL 976   2023-04-03   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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