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: 288

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-288 A Sidell IL SDLLILXCRS0  1015 FRONTIER NORTH, INC. - IL 370      
217-288 1 Sidell IL   1015 FRONTIER NORTH, INC. - IL 370      
217-288 2 Sidell IL   224C ONVOY, LLC 370   2018-10-07   
217-288 3 Sidell IL   224C ONVOY, LLC 370   2019-07-05   
217-288 4 Sidell IL   224C ONVOY, LLC 370   2019-07-05   
217-288 6 Sidell IL   224C ONVOY, LLC 370   2020-01-11   
217-288 7 Sidell IL   508J CENTURYLINK COMMUNICATIONS, LLC 370   2016-06-17   
217-288 8 Sidell IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 370   2015-10-30   
217-288 9 Sidell IL   1015 FRONTIER NORTH, INC. - IL 370      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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