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: 487

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-487 A Cantrall IL CNTRILCTRS0  9329 ILLINOIS BELL TEL CO 374      
217-487 0 Cantrall IL   224C ONVOY, LLC 374   2017-12-11   
217-487 1 Cantrall IL   073H TELNYX LLC 374   2018-07-10   
217-487 2 Cantrall IL   145J TERRA NOVA TELECOM INC. 374   2024-12-29   
217-487 3 Cantrall IL   593K MCC TELEPHONY LLC 374   2010-06-20   
217-487 4 Cantrall IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 374   2004-07-16   
217-487 5 Cantrall IL   516C AT&T CORP. 374   2011-09-29   
217-487 6 Cantrall IL   224C ONVOY, LLC 374   2013-11-29   
217-487 7 Cantrall IL   9329 ILLINOIS BELL TEL CO 374      
217-487 8 Cantrall IL   224C ONVOY, LLC 374   2019-07-21   
217-487 9 Cantrall IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 374   2015-01-10   

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

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