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.

Forreston, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
779-353 A RCFRILRCJMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 360      
779-353 0 FRPTILXAJMD  624H ONVOY SPECTRUM, LLC 360   2024-10-31   
779-353 1 RCFRILRCJMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 360   2022-06-07   
779-353 3   145J TERRA NOVA TELECOM INC. 360   2025-05-21   
815-837 A FRPTILBUDS0  443F AERO NORTH COMMUNICATIONS, INC. - IL 360      
815-938 A FSTNILXARS0  1036 FRONTIER NORTH, INC. - IL 360      
815-938 0 FRPTILXAMMD  224C ONVOY, LLC 360   2021-04-02   
815-938 2 FSTNILXARS0  1036 FRONTIER NORTH, INC. - IL 360      
815-938 3 FSTNILXARS0  1036 FRONTIER NORTH, INC. - IL 360      
815-938 4 FRPTILXAMMD  224C ONVOY, LLC 360   2021-08-12   
815-938 5 FRPTILXAMMD  224C ONVOY, LLC 360   2020-07-18   
815-938 6 RCFRILRCX3X  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 360   2016-01-17   
815-938 7 RCFRILRTXRX  508J CENTURYLINK COMMUNICATIONS, LLC 360   2016-02-18   
815-938 8 RCFRILRTX4Y  318J COMCAST IP PHONE, LLC 360   2008-06-15   
815-938 9 FSTNILXARS0  1036 FRONTIER NORTH, INC. - IL 360      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.