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: 618 [Rate centres in NPA 618] [Dial plan for NPA 618]

NXX: 621

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-621 A Cairo IL CRDLILXEXSX  197D VONAGE AMERICA LLC 362      
618-621 0 Cairo IL CRDLILXEXSX  197D VONAGE AMERICA LLC 362   2020-09-19   
618-621 1 Cairo IL CRDLIL13AMD  495J STRATUS NETWORKS 362   2020-12-19   
618-621 2 Cairo IL CRDLILXEX8X  224C ONVOY, LLC 362   2021-02-12   
618-621 3 Cairo IL CRDLILXEX8X  224C ONVOY, LLC 362   2021-02-12   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.