Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 630 [Rate centres in NPA 630] [Dial plan for NPA 630]

NXX: 623

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
630-623 A Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      
630-623 0 Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      
630-623 1 Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      
630-623 2 Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      
630-623 3 Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      
630-623 4 Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      
630-623 5 Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      
630-623 6 Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      
630-623 7 Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      
630-623 8 Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      
630-623 9 Oak Brook IL OKBRILOADS0  9329 ILLINOIS BELL TEL CO 358      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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