Confidence: Medium · Source: FCC ULS · As of 2026-09-11
KB8DMZ callsign genealogy
Currently held by COOK, ROCKEY J
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 KB8DMZ's current licensee, walking backwards.
- COOK, ROCKEY JOHgranted 2025-05-21cancelled 2025-06-10
Successor callsigns
Callsigns held now by people who previously held KB8DMZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB8DMZ, oldest first.
- COOK, ROCKEY J OH1997-12-18 → cancelled 2009-12-19
- COOK, ROCKEY J OH2025-06-10 active