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: 688

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-688 A Edgemont IL COVLILCQXQX  829J PAETEC ITEL, LLC 520      
618-688 0 Edgemont IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520   2005-02-07   
618-688 1 Edgemont IL   829J PAETEC ITEL, LLC 520   2002-11-01   
618-688 2 Edgemont IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520   2007-04-19   
618-688 3 Edgemont IL   624H ONVOY SPECTRUM, LLC 520   2025-01-04   
618-688 4 Edgemont IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520   2003-08-25   
618-688 5 Edgemont IL   224C ONVOY, LLC 520   2021-11-20   
618-688 7 Edgemont IL   829J PAETEC ITEL, LLC 520   2007-02-04   
618-688 8 Edgemont IL   224C ONVOY, LLC 520   2024-04-04   
618-688 9 Edgemont IL   224C ONVOY, LLC 520   2021-11-20   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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