Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4FOX callsign genealogy
Currently held by URen, Mark F
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 KZ4FOX's current licensee, walking backwards.
- Uren, Mark FGAgranted 2019-05-14cancelled 2019-06-07
Successor callsigns
Callsigns held now by people who previously held KZ4FOX.
No current licensee on record previously held this callsign.