Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI5MX callsign genealogy
Currently held by LEFTWICH, M CRAIG
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 AI5MX's current licensee, walking backwards.
- BURKHARDT, MICHAEL HOHgranted 2017-07-27cancelled 2025-07-29
Successor callsigns
Callsigns held now by people who previously held AI5MX.
All historical holders
Every license row we've seen with the callsign AI5MX, oldest first.
- LEFTWICH, M CRAIG UT2016-01-19 → cancelled 2016-05-27
- Burkhardt, Michael OH2025-07-29 → cancelled 2026-06-19