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: 505

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-505 A Winnetka IL CHCGIL24DS6  224C ONVOY, LLC 358      
224-505 0 Winnetka IL CHCGIL24DS6  224C ONVOY, LLC 358   2015-02-13   
224-505 1 Winnetka IL CHCGIL24DS6  224C ONVOY, LLC 358   2015-02-13   
224-505 2 Winnetka IL CHCGIL24DS6  224C ONVOY, LLC 358   2015-02-13   
224-505 3 Winnetka IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2015-07-02   
224-505 4 Winnetka IL CHCGIL24DS6  224C ONVOY, LLC 358   2016-03-07   
224-505 5 Winnetka IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2015-07-16   
224-505 6 Winnetka IL SCBGILRRGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-10-21   
224-505 7 Winnetka IL CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358   2015-02-16   
224-505 8 Winnetka IL CHCGIL24DS6  224C ONVOY, LLC 358   2016-03-07   
224-505 9 Winnetka IL SCBGILRRGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-02-16   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.