Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 815 [Rate centres in NPA 815] [Dial plan for NPA 815]

NXX: 240

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-240 A Rock Cut IL RCFRILRTXQY  792K CHARTER IP ENABLED SERVICES, LLC 360   2025-01-16   
815-240 0 Rock Cut IL   224C ONVOY, LLC 360   2020-05-21   
815-240 1 Rock Cut IL   792K CHARTER IP ENABLED SERVICES, LLC 360   2010-12-02   
815-240 2 Rock Cut IL   224C ONVOY, LLC 360   2018-07-30   
815-240 3 Rock Cut IL   224C ONVOY, LLC 360   2019-09-06   
815-240 4 Rock Cut IL   318J COMCAST IP PHONE, LLC 360   2015-04-28   
815-240 5 Rock Cut IL   224C ONVOY, LLC 360   2019-09-06   
815-240 6 Rock Cut IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 360   2018-05-28   
815-240 8 Rock Cut IL   224C ONVOY, LLC 360   2020-05-21   
815-240 9 Rock Cut IL   224C ONVOY, LLC 360   2020-05-21   

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

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