Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5OZY callsign genealogy
Currently held by Diiulio, Anthony 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 W5OZY's current licensee, walking backwards.
- Diiulio, Anthony FTXgranted 2021-06-30cancelled 2021-10-09
Successor callsigns
Callsigns held now by people who previously held W5OZY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5OZY, oldest first.
- BONNER, CLAUDE D TX1988-08-02 → cancelled 2000-08-03
- OSBORN, JAMES E TX2008-05-28 → cancelled 2020-05-29
- Diiulio, Anthony F TX2021-10-09 active