Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4NGR callsign genealogy
Currently held by JEZIERSKI, MICHAEL W
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 KD4NGR's current licensee, walking backwards.
- Danger, JNVgranted 2022-08-16cancelled 2022-09-03
Successor callsigns
Callsigns held now by people who previously held KD4NGR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4NGR, oldest first.
- JEZIERSKI, MICHAEL W VA2002-01-23 → cancelled 2014-04-22
- Danger, J NV2022-09-03 active