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: 905

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-905 A Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-905 0 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-905 1 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-905 2 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-905 3 Chicago Zone 01-Franklin IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2011-02-24   
312-905 4 Chicago Zone 01-Franklin IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2011-02-24   
312-905 5 Chicago Zone 01-Franklin IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2011-02-24   
312-905 6 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-905 7 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-905 8 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-905 9 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      

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

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