Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9WIL callsign genealogy
Currently held by Parz, Will
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 K9WIL's current licensee, walking backwards.
- Kreitzmann, William EWAgranted 2020-03-09cancelled 2020-03-31
Successor callsigns
Callsigns held now by people who previously held K9WIL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9WIL, oldest first.
- Parz, Will NC2007-10-13 → cancelled 2019-10-16
- Kreitzmann, William E WA2020-03-31 active