Local Calling Guide

Area code/prefix search

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

NXX: 407

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-407 A Romeoville IL RMVLILRMDS0  9329 ILLINOIS BELL TEL CO 358      
815-407 0 Romeoville IL   9329 ILLINOIS BELL TEL CO 358      
815-407 1 Romeoville IL   9329 ILLINOIS BELL TEL CO 358      
815-407 2 Romeoville IL   460K FIRST COMMUNICATIONS, LLC 358   2014-09-20   
815-407 3 Romeoville IL   145J TERRA NOVA TELECOM INC. 358   2024-09-13   
815-407 4 Romeoville IL   829J PAETEC ITEL, LLC 358   2009-04-21   
815-407 5 Romeoville IL   9329 ILLINOIS BELL TEL CO 358      
815-407 6 Romeoville IL   829J PAETEC ITEL, LLC 358   2009-11-02   
815-407 7 Romeoville IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-19   
815-407 8 Romeoville IL   224C ONVOY, LLC 358   2010-05-15   
815-407 9 Romeoville IL   224C ONVOY, LLC 358   2021-11-18   

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

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