Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4NIA callsign genealogy
Currently held by HANSEN, MATTHEW K
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 N4NIA's current licensee, walking backwards.
- HANSEN, MATTHEW KTNgranted 2024-08-06cancelled 2024-08-31
Successor callsigns
Callsigns held now by people who previously held N4NIA.
- KOSMETATOS, S DENNISGAgranted 2021-04-16
All historical holders
Every license row we've seen with the callsign N4NIA, oldest first.
- KOSMETATOS, S DENNIS GA2011-08-02 → cancelled 2021-04-16
- HANSEN, MATTHEW K TN2024-08-31 active