Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ROL callsign genealogy
Currently held by Rolniak, Justin 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 K0ROL's current licensee, walking backwards.
- Rolniak, Justin JIAgranted 2023-11-21cancelled 2025-02-25
Successor callsigns
Callsigns held now by people who previously held K0ROL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0ROL, oldest first.
- STOCKTON, OAKLEY L CO1993-02-02 → cancelled 2005-02-03
- Rolniak, Justin J IA2025-02-25 active