Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4XML callsign genealogy
Currently held by LEONE, 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 K4XML's current licensee, walking backwards.
- LEONE, MARK AVAgranted 2010-08-16cancelled 2010-09-03
Successor callsigns
Callsigns held now by people who previously held K4XML.
No current licensee on record previously held this callsign.