Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ICA callsign genealogy
Currently held by Ullyatt, Sean
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 K0ICA's current licensee, walking backwards.
- Ullyatt, SeanCOgranted 2024-08-29cancelled 2024-09-17
Successor callsigns
Callsigns held now by people who previously held K0ICA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0ICA, oldest first.
- Higgason, Henry G NE2006-01-10 → cancelled 2018-01-11
- Ullyatt, Sean CO2024-09-17 active