Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9ATT callsign genealogy
Currently held by THOMAS, KENNETH C
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 N9ATT's current licensee, walking backwards.
- COX, MARK EILgranted 2007-03-07cancelled 2010-11-13
Successor callsigns
Callsigns held now by people who previously held N9ATT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9ATT, oldest first.
- THOMAS, KENNETH C IL1995-06-05 → cancelled 2007-06-06
- COX, MARK E IL2020-09-26 active