Local Calling Guide

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NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 979

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-979 A Elmhurst IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
331-979 0 Elmhurst IL   318J COMCAST IP PHONE, LLC 358   2015-04-17   
331-979 1 Elmhurst IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2015-07-09   
331-979 2 Elmhurst IL   318J COMCAST IP PHONE, LLC 358   2015-04-17   
331-979 3 Elmhurst IL   224C ONVOY, LLC 358   2016-02-15   
331-979 4 Elmhurst IL   224C ONVOY, LLC 358   2016-02-15   
331-979 5 Elmhurst IL   224C ONVOY, LLC 358   2016-02-15   
331-979 6 Elmhurst IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2016-07-16   
331-979 7 Elmhurst IL   318J COMCAST IP PHONE, LLC 358   2016-04-07   
331-979 8 Elmhurst IL   515J IP HORIZON LLC 358   2016-08-09   
331-979 9 Elmhurst IL   224C ONVOY, LLC 358   2015-12-12   

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

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