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: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-203 A Buffalo IL SPFDILESXSX  145J TERRA NOVA TELECOM INC. 374      
217-203 0 Buffalo IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 374   2015-10-29   
217-203 1 Buffalo IL   073H TELNYX LLC 374   2017-03-20   
217-203 2 Buffalo IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 374   2014-08-08   
217-203 3 Buffalo IL   145J TERRA NOVA TELECOM INC. 374   2019-03-17   
217-203 4 Buffalo IL   224C ONVOY, LLC 374   2018-07-16   
217-203 5 Buffalo IL   073H TELNYX LLC 374   2019-08-20   
217-203 6 Buffalo IL   224C ONVOY, LLC 374   2019-04-21   
217-203 7 Buffalo IL   516C AT&T CORP. 374   2011-02-04   
217-203 8 Buffalo IL   224C ONVOY, LLC 374   2019-04-21   
217-203 9 Buffalo IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 374   2017-08-17   

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

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