Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD9I callsign genealogy
Currently held by COONS, MARK A
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 KD9I's current licensee, walking backwards.
- COONS, MARK ATXgranted 2013-07-20cancelled 2015-05-30
Successor callsigns
Callsigns held now by people who previously held KD9I.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD9I, oldest first.
- COONS, WILLIAM D IL2005-05-13 → cancelled 2013-06-11
- COONS, MARK A TX2025-05-06 active