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.
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Switch: LBRDILLMDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
630-424 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-458 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-495 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-543 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-620 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-627 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-628 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-629 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-652 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-691 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-693 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-705 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-889 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-932 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      
630-953 A Lombard IL 9329 ILLINOIS BELL TEL CO 358      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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