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: 224 [Rate centres in NPA 224] [Dial plan for NPA 224]

NXX: 428

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-428 A Algonquin IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
224-428 0 Algonquin IL   073H TELNYX LLC 358   2017-04-21   
224-428 1 Algonquin IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2018-11-05   
224-428 2 Algonquin IL   6529 T-MOBILE USA, INC. 358   2017-04-10   
224-428 3 Algonquin IL   6529 T-MOBILE USA, INC. 358   2017-04-10   
224-428 4 Algonquin IL   6529 T-MOBILE USA, INC. 358   2017-04-10   
224-428 5 Algonquin IL   6529 T-MOBILE USA, INC. 358   2017-04-10   
224-428 6 Algonquin IL   6529 T-MOBILE USA, INC. 358   2017-04-10   
224-428 7 Algonquin IL   6529 T-MOBILE USA, INC. 358   2017-04-10   
224-428 8 Algonquin IL   6529 T-MOBILE USA, INC. 358   2016-12-26   
224-428 9 Algonquin IL   6529 T-MOBILE USA, INC. 358   2016-12-26   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.