Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD0ZFL callsign genealogy
Currently held by Ciraula, Michael 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 KD0ZFL's current licensee, walking backwards.
- Ciraula, Michael KCOgranted 2014-02-20cancelled 2017-03-24
Successor callsigns
Callsigns held now by people who previously held KD0ZFL.
- Ciraula, Michael KCOgranted 2014-02-20cancelled 2017-03-24
All historical holders
Every license row we've seen with the callsign KD0ZFL, oldest first.
- Ciraula, Michael K CO2014-02-20 → cancelled 2014-11-13
- Ciraula, Michael K CO2017-03-24 active