Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO6TNO callsign genealogy
Currently held by Ontiveros, Constantino D
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 KO6TNO's current licensee, walking backwards.
- Ontiveros, Constantino DCAgranted 2016-08-26cancelled 2016-10-12
Successor callsigns
Callsigns held now by people who previously held KO6TNO.
No current licensee on record previously held this callsign.