Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WZ1ZZ callsign genealogy
Currently held by FEINSTONE, RONALD M
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 WZ1ZZ's current licensee, walking backwards.
- Majewski Jr, FrankMAgranted 2020-09-09cancelled 2020-10-23
Successor callsigns
Callsigns held now by people who previously held WZ1ZZ.
- FEINSTONE, RONALD MNYgranted 2018-07-03
All historical holders
Every license row we've seen with the callsign WZ1ZZ, oldest first.
- FEINSTONE, RONALD M NY2016-06-07 → cancelled 2018-07-03
- Majewski Jr, Frank MA2020-10-23 active