Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4DES callsign genealogy
Currently held by FILLA, MARK L
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 N4DES's current licensee, walking backwards.
- FILLA, MARK LFLgranted 2013-01-24cancelled 2016-09-30
Successor callsigns
Callsigns held now by people who previously held N4DES.
- ALLEN, GEORGE ASCgranted 2024-07-26
All historical holders
Every license row we've seen with the callsign N4DES, oldest first.
- ALLEN, GEORGE A NC2005-02-04 → cancelled 2014-09-06
- FILLA, MARK L FL2026-08-06 active