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: 836

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-836 A Shipman IL SPMNILXEDS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-836 0 Shipman IL   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-836 1 Shipman IL   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-836 3 Shipman IL   224C ONVOY, LLC 520   2018-07-29   
618-836 4 Shipman IL   224C ONVOY, LLC 520   2019-07-29   
618-836 5 Shipman IL   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-836 6 Shipman IL   508J CENTURYLINK COMMUNICATIONS, LLC 520   2016-01-23   
618-836 7 Shipman IL   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-836 8 Shipman IL   224C ONVOY, LLC 520   2019-07-29   
618-836 9 Shipman IL   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      

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

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