Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0NPZ callsign genealogy
Currently held by Blum, Douglas
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 K0NPZ's current licensee, walking backwards.
- Blum, DouglasNEgranted 2021-11-30cancelled 2021-12-18
Successor callsigns
Callsigns held now by people who previously held K0NPZ.
No current licensee on record previously held this callsign.