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: 617

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-617 A Olney IL OLNYILXEGMD  224C ONVOY, LLC 978      
618-617 0 Olney IL   224C ONVOY, LLC 978   2022-12-05   
618-617 1 Olney IL   224C ONVOY, LLC 978   2021-02-26   
618-617 2 Olney IL   224C ONVOY, LLC 978   2021-02-26   
618-617 3 Olney IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 978   2023-08-18   
618-617 4 Olney IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 978   2023-08-18   
618-617 5 Olney IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 978   2023-08-18   
618-617 6 Olney IL   224C ONVOY, LLC 978   2020-02-17   
618-617 7 Olney IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 978   2023-08-18   
618-617 8 Olney IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 978   2023-08-18   
618-617 9 Olney IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 978   2023-08-18   

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

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