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: 517

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-517 A Olney IL OLNYILXEQMD  6529 T-MOBILE USA, INC. 978      
618-517 0 Olney IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 978   2023-07-24   
618-517 1 Olney IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 978   2023-07-24   
618-517 2 Olney IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 978   2023-07-24   
618-517 3 Olney IL   6529 T-MOBILE USA, INC. 978   2018-09-01   
618-517 4 Olney IL   6529 T-MOBILE USA, INC. 978   2018-09-01   
618-517 5 Olney IL   6529 T-MOBILE USA, INC. 978   2018-09-01   
618-517 6 Olney IL   6529 T-MOBILE USA, INC. 978   2018-09-01   
618-517 7 Olney IL   6529 T-MOBILE USA, INC. 978   2018-09-01   
618-517 8 Olney IL   6529 T-MOBILE USA, INC. 978   2018-09-01   
618-517 9 Olney IL   6529 T-MOBILE USA, INC. 978   2016-09-05   

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

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