Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4ZS callsign genealogy
Currently held by STOLBUNOV, PETER 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 KM4ZS's current licensee, walking backwards.
- Mullins, Jonathan RKYgranted 2014-12-03cancelled 2017-05-23
Successor callsigns
Callsigns held now by people who previously held KM4ZS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KM4ZS, oldest first.
- STOLBUNOV, PETER M VA1999-09-30 → cancelled 2011-10-25
- Mullins, Jonathan R KY2017-05-23 active