Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4OKI callsign genealogy
Currently held by SHEPPARD, RYAN
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 K4OKI's current licensee, walking backwards.
- Sheppard, Ryan DNCgranted 2014-05-22cancelled 2014-06-20
Successor callsigns
Callsigns held now by people who previously held K4OKI.
- SHEPPARD, RYANNCgranted 2025-07-15