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: 730 [Rate centres in NPA 730] [Dial plan for NPA 730]

NXX: 224

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
730-224 A Karnak IL CRDLILABVMD  939H COMMIO, LLC 362      
730-224 0 Karnak IL   939H COMMIO, LLC 362   2023-12-01   
730-224 1 Karnak IL   939H COMMIO, LLC 362   2023-12-01   
730-224 2 Karnak IL   939H COMMIO, LLC 362   2023-12-01   
730-224 3 Karnak IL   939H COMMIO, LLC 362   2023-12-01   
730-224 4 Karnak IL   939H COMMIO, LLC 362   2023-12-01   
730-224 5 Karnak IL   624H ONVOY SPECTRUM, LLC 362   2024-04-27   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.