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.

NPA: 872 [Rate centres in NPA 872] [Dial plan for NPA 872]

NXX: 500

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
872-500 A Chicago Zone 04-Humboldt IL CHCGILWUX9X  883K AHOI LLC 358   2026-05-15   
872-500 0 Chicago Zone 04-Humboldt IL CHCGILWUX9X  883K AHOI LLC 358   2026-05-15   
872-500 5 Chicago Zone 04-Humboldt IL   114J EXIANT COMMUNICATIONS LLC 358   2026-05-18   
872-500 7 Chicago Zone 04-Humboldt IL   816C INTRADO COMMUNICATIONS, LLC 358   2026-10-16   
872-500 8 Chicago Zone 04-Humboldt IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-10-09   
872-500 9 Chicago Zone 04-Humboldt IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-10-09   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.