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: 708 [Rate centres in NPA 708] [Dial plan for NPA 708]

NXX: 757

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
708-757 A Chicago Heights East IL ECHGILEHDS0  9329 ILLINOIS BELL TEL CO 358      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.