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.

East Chicago, IN

<< 1 2 3

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
219-804 1   515J IP HORIZON LLC 358   2013-11-14   
219-804 2   6529 T-MOBILE USA, INC. 358   2015-10-12   
219-804 3   6529 T-MOBILE USA, INC. 358   2015-10-12   
219-804 4   6529 T-MOBILE USA, INC. 358   2015-10-12   
219-804 5   6529 T-MOBILE USA, INC. 358   2015-10-12   
219-804 6   624H ONVOY SPECTRUM, LLC 358   2021-06-28   
219-804 7   508J CENTURYLINK COMMUNICATIONS, LLC 358   2013-07-26   
219-804 8   097D ONVOY, LLC - IN 358   2016-03-24   
219-804 9   097D ONVOY, LLC - IN 358   2016-03-24   

<< 1 2 3

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.