Local Calling Guide

Area code/prefix search

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

NXX: 372

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-372 A Romeoville IL RMVLILRMDS0  9329 ILLINOIS BELL TEL CO 358      
815-372 0 Romeoville IL   9329 ILLINOIS BELL TEL CO 358      
815-372 1 Romeoville IL   9329 ILLINOIS BELL TEL CO 358      
815-372 2 Romeoville IL   9329 ILLINOIS BELL TEL CO 358      
815-372 3 Romeoville IL   9329 ILLINOIS BELL TEL CO 358      
815-372 4 Romeoville IL   9329 ILLINOIS BELL TEL CO 358      
815-372 5 Romeoville IL   5562 METROPCS, INC. 358   2020-12-31   
815-372 6 Romeoville IL   460K FIRST COMMUNICATIONS, LLC 358   2014-09-20   
815-372 7 Romeoville IL   5562 METROPCS, INC. 358   2018-12-19   
815-372 8 Romeoville IL   5562 METROPCS, INC. 358   2020-09-19   
815-372 9 Romeoville IL   9329 ILLINOIS BELL TEL CO 358      

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

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