Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CHCGILFRDS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-444 5 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-444 6 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-444 7 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-444 9 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-541 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-553 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-556 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-557 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-574 2 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-574 4 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-574 9 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-592 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-603 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-606 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-629 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-630 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-641 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-759 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-759 0 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-759 1 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-759 2 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-759 3 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-759 4 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-759 5 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-759 7 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-759 8 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-759 9 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-797 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-812 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-849 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-855 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-857 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-857 0 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-857 1 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-857 2 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-857 7 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-857 9 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-899 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-899 0 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-899 1 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-899 2 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-899 3 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-899 4 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-899 5 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-899 7 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-899 8 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-899 9 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      
312-984 A Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358      

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

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