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: 628

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-628 A Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-628 0 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-628 1 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-628 2 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-628 3 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-628 4 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-628 5 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-628 6 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-628 7 Northbrook IL CHCGIL24DS6  224C ONVOY, LLC 358   2014-10-14   
224-628 8 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
224-628 9 Northbrook IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.