Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1MDB callsign genealogy
Currently held by Breininger, Matthew D
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 N1MDB's current licensee, walking backwards.
- BREININGER, MATTHEW DKSgranted 2017-01-06cancelled 2017-01-21
Successor callsigns
Callsigns held now by people who previously held N1MDB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1MDB, oldest first.
- ST CYR, ALBERT W MA1992-06-23 → cancelled 2004-06-24
- Breininger, Matthew D KS2017-01-21 active