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: 217 [Rate centres in NPA 217] [Dial plan for NPA 217]

NXX: 604

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-604 A Carthage IL MCMBILXDJMD  593K MCC TELEPHONY LLC 977      
217-604 1 Carthage IL GLBGILXDXMD  495J STRATUS NETWORKS 977   2021-02-28   
217-604 2 Carthage IL MCMBILXDX9X  224C ONVOY, LLC 977   2021-05-09   
217-604 3 Carthage IL CLCHILXDDS2  342F MTC COMMUNICATIONS, INC. - IL 977   2015-03-13   
217-604 4 Carthage IL MCMBILXDX9X  224C ONVOY, LLC 977   2021-08-09   
217-604 5 Carthage IL MCMBILXDX9X  224C ONVOY, LLC 977   2023-06-05   
217-604 7 Carthage IL MCMBILXDX5X  624H ONVOY SPECTRUM, LLC 977   2023-07-29   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.