Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ7D callsign genealogy
Currently held by KREINER, PAUL D
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 KZ7D's current licensee, walking backwards.
- KREINER, PAUL DIDgranted 2019-03-27cancelled 2019-05-03
Successor callsigns
Callsigns held now by people who previously held KZ7D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KZ7D, oldest first.
- BLAUMER, JOSEPH M OR2007-09-05 → cancelled 2017-04-13
- KREINER, PAUL D ID2019-05-03 active