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.

Switch: RCFRILRCX9X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
779-310 0 New Milford IL 939H COMMIO, LLC 360   2022-08-21   
779-315 8 Roscoe IL 939H COMMIO, LLC 360   2022-12-10   
779-330 0 Belvidere IL 939H COMMIO, LLC 360   2022-08-21   
779-499 0 Freeport IL 939H COMMIO, LLC 360   2022-08-21   
779-729 0 Lena IL 939H COMMIO, LLC 360   2022-08-21   
779-789 0 Rockton IL 939H COMMIO, LLC 360   2022-08-21   
779-867 A Rockford IL 939H COMMIO, LLC 360      
779-867 0 Rockford IL 939H COMMIO, LLC 360   2024-02-03   
779-867 1 Rockford IL 939H COMMIO, LLC 360   2024-02-03   
779-867 5 Rockford IL 939H COMMIO, LLC 360   2021-06-10   
779-867 8 Rockford IL 939H COMMIO, LLC 360   2024-02-03   
815-800 6 Poplar Grove IL 939H COMMIO, LLC 360   2022-12-10   

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

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