Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4IOX callsign genealogy
Currently held by WORTHY, LEON
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 KD4IOX's current licensee, walking backwards.
- WORTHY, LEONNCgranted 2006-12-01cancelled 2007-02-08
Successor callsigns
Callsigns held now by people who previously held KD4IOX.
- Worthy, LeonNCgranted 2024-04-19
All historical holders
Every license row we've seen with the callsign KD4IOX, oldest first.
- WORTHY, LEON NC1999-03-08 → cancelled 2006-03-02
- Worthy, Leon NC2016-12-06 → cancelled 2024-04-19