Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 312 [Rate centres in NPA 312] [Dial plan for NPA 312]

NXX: 298

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-298 A Chicago Zone 01-Calumet IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-298 0 Chicago Zone 01-Calumet IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-298 1 Chicago Zone 01-Calumet IL CHCGILWUX1X  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2009-01-28   
312-298 2 Chicago Zone 01-Calumet IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358   2001-06-12   
312-298 3 Chicago Zone 01-Calumet IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358   2001-06-12   
312-298 4 Chicago Zone 01-Calumet IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358   2001-06-12   
312-298 5 Chicago Zone 01-Calumet IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358   2001-06-12   
312-298 6 Chicago Zone 01-Calumet IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358   2001-06-12   
312-298 7 Chicago Zone 01-Calumet IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358   2001-06-12   
312-298 8 Chicago Zone 01-Calumet IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358   2001-06-12   
312-298 9 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-02-25   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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