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: 427

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-427 A Catlin IL CTLNILCBRS0  9329 ILLINOIS BELL TEL CO 370      
217-427 1 Catlin IL CHMPILCPXUX  939H COMMIO, LLC 370   2022-11-19   
217-427 2 Catlin IL CTLNILCBRS0  9329 ILLINOIS BELL TEL CO 370      
217-427 3 Catlin IL CHMPILLW0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 370   2011-04-09   
217-427 5 Catlin IL CTLNILCBRS0  9329 ILLINOIS BELL TEL CO 370      
217-427 6 Catlin IL CHMPILCPDS1  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 370   2021-07-11   
217-427 7 Catlin IL CHMPILCPXOX  508J CENTURYLINK COMMUNICATIONS, LLC 370   2016-06-11   
217-427 8 Catlin IL CHMPILLW0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 370   2005-03-24   

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

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