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: GYLKILGLDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
224-541 A Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
224-541 1 Grayslake IL 9329 ILLINOIS BELL TEL CO 358   2011-12-08   
847-223 A Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-231 4 Grayslake IL 9329 ILLINOIS BELL TEL CO 358   1999-08-30   
847-231 5 Grayslake IL 9329 ILLINOIS BELL TEL CO 358   1999-08-30   
847-231 6 Grayslake IL 9329 ILLINOIS BELL TEL CO 358   1999-08-30   
847-543 A Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-543 0 Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-543 1 Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-543 2 Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-543 3 Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-543 4 Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-543 5 Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-543 6 Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-543 7 Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-543 8 Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-543 9 Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-548 A Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-665 A Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-665 2 Grayslake IL 9329 ILLINOIS BELL TEL CO 358   2003-11-20   
847-752 A Grayslake IL 9329 ILLINOIS BELL TEL CO 358      
847-752 2 Grayslake IL 9329 ILLINOIS BELL TEL CO 358   2003-05-22   

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

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