Local Calling Guide

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NPA: 815 [Rate centres in NPA 815] [Dial plan for NPA 815]

NXX: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-421 A Herscher IL HRSCILHRRS1  9329 ILLINOIS BELL TEL CO 358      
815-421 0 Herscher IL   9329 ILLINOIS BELL TEL CO 358      
815-421 1 Herscher IL   224C ONVOY, LLC 358   2016-04-11   
815-421 2 Herscher IL   829J PAETEC ITEL, LLC 358   2009-11-13   
815-421 3 Herscher IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2015-09-27   
815-421 4 Herscher IL   318J COMCAST IP PHONE, LLC 358   2005-08-01   
815-421 5 Herscher IL   460K FIRST COMMUNICATIONS, LLC 358   2004-11-25   
815-421 7 Herscher IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-01-12   
815-421 8 Herscher IL   5447 ACCESS ONE, INC. - IL 358   2006-08-06   
815-421 9 Herscher IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-07-25   

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

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