Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5ZZZ callsign genealogy
Currently held by GRAINGER, JUSTIN 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 K5ZZZ's current licensee, walking backwards.
- GRAINGER, JUSTIN MTXgranted 2016-03-01cancelled 2019-06-04
Successor callsigns
Callsigns held now by people who previously held K5ZZZ.
- WEST, RONALD JFLgranted 2017-02-10
All historical holders
Every license row we've seen with the callsign K5ZZZ, oldest first.
- WEST, RONALD J FL2010-04-24 → cancelled 2017-02-10
- GRAINGER, JUSTIN M TX2019-06-04 active