Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0DUN callsign genealogy
Currently held by DUNCAN, MATTHEW D
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 K0DUN's current licensee, walking backwards.
- DUNCAN, MATTHEW DCOgranted 2019-02-19cancelled 2019-03-16
Successor callsigns
Callsigns held now by people who previously held K0DUN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0DUN, oldest first.
- MATTHEWS, TIMOTHY J MN2006-10-03 → cancelled 2018-10-04
- DUNCAN, MATTHEW D CO2019-03-16 active