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: 479

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-479 A Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-479 0 Northbrook IL CHCGIL24DS6  224C ONVOY, LLC 358      
224-479 1 Northbrook IL CHCGIL24DS6  224C ONVOY, LLC 358      
224-479 2 Northbrook IL   460K FIRST COMMUNICATIONS, LLC 358      
224-479 3 Northbrook IL SCBGILRRGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
224-479 4 Northbrook IL SCBGILRRGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
224-479 5 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-479 6 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-479 7 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-479 8 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-479 9 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.