Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4ZH callsign genealogy
Currently held by Nazzaro, Anthony T
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 AI4ZH's current licensee, walking backwards.
- Hilman, Zachary AFLgranted 2021-09-13cancelled 2021-10-05
Successor callsigns
Callsigns held now by people who previously held AI4ZH.
- Nazzaro, Anthony TVAgranted 2026-07-25
All historical holders
Every license row we've seen with the callsign AI4ZH, oldest first.
- Nazzaro, Anthony T VA2006-08-29 → cancelled 2016-10-04
- Hilman, Zachary A FL2021-10-05 active