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: CHCGILNEXJX

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
872-731 2 Chicago Zone 07-Stewart IL 318J COMCAST IP PHONE, LLC 358   2014-12-01   
872-777 4 Chicago Zone 07-Stewart IL 318J COMCAST IP PHONE, LLC 358   2012-12-21   
872-802 0 Chicago Zone 04-Humboldt IL 318J COMCAST IP PHONE, LLC 358   2013-12-02   
872-802 3 Chicago Zone 04-Humboldt IL 318J COMCAST IP PHONE, LLC 358   2013-12-02   
872-806 0 Chicago Zone 02-Edgewater IL 318J COMCAST IP PHONE, LLC 358   2014-03-03   
872-808 2 Chicago Zone 04-Humboldt IL 318J COMCAST IP PHONE, LLC 358   2014-04-28   
872-813 2 Chicago Zone 05-Austin IL 318J COMCAST IP PHONE, LLC 358   2014-11-18   
872-817 9 Chicago Zone 04-Humboldt IL 318J COMCAST IP PHONE, LLC 358   2014-11-25   
872-829 2 Chicago Zone 04-Humboldt IL 318J COMCAST IP PHONE, LLC 358   2013-04-28   
872-829 3 Chicago Zone 04-Humboldt IL 318J COMCAST IP PHONE, LLC 358   2013-04-28   
872-888 8 Chicago Zone 02-Edgewater IL 318J COMCAST IP PHONE, LLC 358   2014-05-30   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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