Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: OKBRILOADS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
630-218 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-368 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-472 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-537 A Hinsdale IL 9329 ILLINOIS BELL TEL CO 358      
630-537 2 Hinsdale IL 9329 ILLINOIS BELL TEL CO 358   2010-07-25   
630-537 3 Hinsdale IL 9329 ILLINOIS BELL TEL CO 358   2010-07-25   
630-537 4 Hinsdale IL 9329 ILLINOIS BELL TEL CO 358   2010-07-25   
630-537 5 Hinsdale IL 9329 ILLINOIS BELL TEL CO 358   2010-07-25   
630-537 6 Hinsdale IL 9329 ILLINOIS BELL TEL CO 358   2010-07-25   
630-571 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-572 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-573 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-574 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-574 0 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-574 1 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-574 2 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-574 3 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-574 4 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-574 5 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-574 7 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-574 8 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-574 9 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-575 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-586 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-586 0 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-586 1 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-586 2 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-586 3 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-586 4 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-586 5 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-586 6 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-586 8 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-586 9 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 0 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 1 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 2 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 3 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 4 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 5 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 6 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 7 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 8 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-623 9 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-645 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-684 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-706 A Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-706 2 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358      
630-706 3 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358   2000-07-09   
630-706 4 Oak Brook IL 9329 ILLINOIS BELL TEL CO 358   2000-08-11   

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Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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