Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4KFK callsign genealogy
Currently held by MILLS, DARRIN M
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K4KFK's current licensee, walking backwards.
- MILLS, DARRIN MFLgranted 2022-08-09cancelled 2023-03-13
Successor callsigns
Callsigns held now by people who previously held K4KFK.
- BOUILLON, MARK SNJgranted 2003-06-03cancelled 2015-06-04
All historical holders
Every license row we've seen with the callsign K4KFK, oldest first.
- BOUILLON, MARK S NJ2003-06-03 → cancelled 2008-06-06
- MILLS, DARRIN M FL2023-03-13 active