Local Calling Guide

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

NXX: 448

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-448 A Mazon IL MAZNILMZRS0  9329 ILLINOIS BELL TEL CO 358      
815-448 0 Mazon IL   318J COMCAST IP PHONE, LLC 358   2012-03-07   
815-448 1 Mazon IL   516C AT&T CORP. 358   2011-06-01   
815-448 2 Mazon IL   9329 ILLINOIS BELL TEL CO 358      
815-448 3 Mazon IL   460K FIRST COMMUNICATIONS, LLC 358   2006-07-30   
815-448 5 Mazon IL   9329 ILLINOIS BELL TEL CO 358      
815-448 6 Mazon IL   5447 ACCESS ONE, INC. - IL 358   2006-08-06   
815-448 7 Mazon IL   829J PAETEC ITEL, LLC 358   2009-11-13   
815-448 8 Mazon IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2026-02-15   
815-448 9 Mazon IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-03-05   

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

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