Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 618 [Rate centres in NPA 618] [Dial plan for NPA 618]

NXX: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-677 A Fayetteville IL FYVLILXERS0  1036 FRONTIER NORTH, INC. - IL 520      
618-677 0 Fayetteville IL   073H TELNYX LLC 520   2020-07-09   
618-677 1 Fayetteville IL   224C ONVOY, LLC 520   2021-04-24   
618-677 2 Fayetteville IL   1036 FRONTIER NORTH, INC. - IL 520      
618-677 3 Fayetteville IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520   2023-03-03   
618-677 4 Fayetteville IL   224C ONVOY, LLC 520   2019-07-29   
618-677 5 Fayetteville IL   224C ONVOY, LLC 520   2019-07-29   
618-677 6 Fayetteville IL   224C ONVOY, LLC 520   2018-07-29   
618-677 7 Fayetteville IL   624H ONVOY SPECTRUM, LLC 520   2025-02-03   
618-677 8 Fayetteville IL   495J STRATUS NETWORKS 520   2020-11-22   
618-677 9 Fayetteville IL   1036 FRONTIER NORTH, INC. - IL 520      

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

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