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: 387

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-387 A Thawville IL TWVLILXCRS1  1015 FRONTIER NORTH, INC. - IL 370      
217-387 1 Thawville IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 370   2015-10-31   
217-387 2 Thawville IL   1015 FRONTIER NORTH, INC. - IL 370      
217-387 3 Thawville IL   224C ONVOY, LLC 370   2018-10-07   
217-387 4 Thawville IL   224C ONVOY, LLC 370   2020-05-22   
217-387 5 Thawville IL   224C ONVOY, LLC 370   2020-05-22   
217-387 6 Thawville IL   224C ONVOY, LLC 370   2020-05-22   
217-387 7 Thawville IL   508J CENTURYLINK COMMUNICATIONS, LLC 370   2016-06-17   
217-387 8 Thawville IL   224C ONVOY, LLC 370   2019-07-05   
217-387 9 Thawville IL   224C ONVOY, LLC 370   2019-07-05   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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