Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0MZZ callsign genealogy
Currently held by Gibbs, Warren L
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 K0MZZ's current licensee, walking backwards.
- Gibbs, Warren LMOgranted 2009-04-07cancelled 2018-04-27
Successor callsigns
Callsigns held now by people who previously held K0MZZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0MZZ, oldest first.
- FRANK, FRED J KS2005-09-27 → cancelled 2017-11-01
- Gibbs, Warren L MO2018-04-27 active