Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0MMM callsign genealogy
Currently held by Martin, Ryan
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 N0MMM's current licensee, walking backwards.
- Martin, RyanCOgranted 2024-11-19cancelled 2024-12-13
Successor callsigns
Callsigns held now by people who previously held N0MMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0MMM, oldest first.
- PERR, MARK A MO2012-09-24 → cancelled 2024-12-04
- Martin, Ryan CO2024-12-13 active