Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1KHZ callsign genealogy
Currently held by CORIO SR, MARK A
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 W1KHZ's current licensee, walking backwards.
- CORIO SR, MARK AFLgranted 2015-01-23cancelled 2018-01-20
Successor callsigns
Callsigns held now by people who previously held W1KHZ.
- CORIO SR, MARK AFLgranted 2015-01-23cancelled 2018-01-20
All historical holders
Every license row we've seen with the callsign W1KHZ, oldest first.
- CORIO SR, MARK A FL2010-05-11 → cancelled 2015-01-23
- CORIO SR, MARK A FL2018-01-20 active