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: CHCGILMFCM6

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-375 A Chicago Zone 01-Wabash IL 6529 T-MOBILE USA, INC. 358      
312-404 A Chicago Zone 01-Wabash IL 6529 T-MOBILE USA, INC. 358      
312-451 A Chicago Zone 01-Calumet IL 6529 T-MOBILE USA, INC. 358      
312-459 A Chicago Zone 01-Calumet IL 6529 T-MOBILE USA, INC. 358   2011-09-16   
312-493 A Chicago Zone 01-Wabash IL 6529 T-MOBILE USA, INC. 358      
312-532 A Chicago Zone 01-Calumet IL 6529 T-MOBILE USA, INC. 358      
312-593 A Chicago Zone 01-Wabash IL 6529 T-MOBILE USA, INC. 358      
312-619 A Chicago Zone 01-Calumet IL 6529 T-MOBILE USA, INC. 358   2012-10-26   
312-731 A Chicago Zone 01-Calumet IL 6529 T-MOBILE USA, INC. 358      
312-804 A Chicago Zone 01-Wabash IL 6529 T-MOBILE USA, INC. 358      
312-927 A Chicago Zone 01-Wabash IL 6529 T-MOBILE USA, INC. 358      
312-929 A Chicago Zone 01-Calumet IL 6529 T-MOBILE USA, INC. 358      
773-517 A Chicago Zone 01-Wabash IL 6529 T-MOBILE USA, INC. 358      
773-807 A Chicago Zone 02-Rogers Park IL 6529 T-MOBILE USA, INC. 358      
773-818 A Chicago Zone 01-Wabash IL 6529 T-MOBILE USA, INC. 358      
773-865 A Chicago Zone 02-Edgewater IL 6529 T-MOBILE USA, INC. 358      
773-895 A Chicago Zone 01-Wabash IL 6529 T-MOBILE USA, INC. 358      
773-943 A Chicago Zone 02-Edgewater IL 6529 T-MOBILE USA, INC. 358   2010-10-18   
773-988 A Chicago Zone 01-Wabash IL 6529 T-MOBILE USA, INC. 358      
773-997 A Chicago Zone 02-Edgewater IL 6529 T-MOBILE USA, INC. 358   2008-12-29   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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