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: 551

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-551 A Hamilton IL HMNDILXC0MD  593K MCC TELEPHONY LLC 977      
217-551 0 Hamilton IL   495J STRATUS NETWORKS 977   2021-02-28   
217-551 1 Hamilton IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 977   2020-05-25   
217-551 2 Hamilton IL   593K MCC TELEPHONY LLC 977   2010-07-24   
217-551 3 Hamilton IL   342F MTC COMMUNICATIONS, INC. - IL 977   2019-01-24   
217-551 4 Hamilton IL   224C ONVOY, LLC 977   2023-05-13   
217-551 5 Hamilton IL   224C ONVOY, LLC 977   2021-04-09   
217-551 6 Hamilton IL   224C ONVOY, LLC 977   2023-09-23   
217-551 7 Hamilton IL   508J CENTURYLINK COMMUNICATIONS, LLC 977   2014-07-29   
217-551 8 Hamilton IL   224C ONVOY, LLC 977   2020-03-13   
217-551 9 Hamilton IL   624H ONVOY SPECTRUM, LLC 977   2023-07-29   

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

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