Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1ZR callsign genealogy
Currently held by Levine, Mark D
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 W1ZR's current licensee, walking backwards.
- Levine, Mark DWAgranted 2025-03-11cancelled 2025-06-10
Successor callsigns
Callsigns held now by people who previously held W1ZR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1ZR, oldest first.
- HALLAS, JOEL R CT2014-05-01 → cancelled 2023-05-22
- Levine, Mark D WA2025-06-10 active