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: BGBKILBKDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
630-226 A Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-312 A Lemont IL 9329 ILLINOIS BELL TEL CO 358      
630-312 2 Lemont IL 9329 ILLINOIS BELL TEL CO 358   2007-03-17   
630-312 3 Lemont IL 9329 ILLINOIS BELL TEL CO 358   2007-03-17   
630-312 4 Lemont IL 9329 ILLINOIS BELL TEL CO 358   2007-03-17   
630-312 5 Lemont IL 9329 ILLINOIS BELL TEL CO 358   2007-03-17   
630-312 6 Lemont IL 9329 ILLINOIS BELL TEL CO 358   2007-03-17   
630-312 7 Lemont IL 9329 ILLINOIS BELL TEL CO 358   2007-03-17   
630-378 A Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-378 0 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-378 1 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-378 2 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-378 3 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-378 4 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-378 5 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-378 6 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-378 9 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-633 3 Lemont IL 9329 ILLINOIS BELL TEL CO 358   2001-07-20   
630-679 A Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-759 A Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-771 A Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-771 0 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-771 1 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-771 2 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-771 3 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-771 4 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-771 6 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-771 7 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-771 8 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-771 9 Bolingbrook IL 9329 ILLINOIS BELL TEL CO 358      
630-914 2 Lemont IL 9329 ILLINOIS BELL TEL CO 358   2007-08-02   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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