Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4MZZ callsign genealogy
Currently held by HOLCOMB, DANIEL C
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 K4MZZ's current licensee, walking backwards.
- HOLCOMB, DANIEL CNCgranted 2001-03-15cancelled 2002-04-09
Successor callsigns
Callsigns held now by people who previously held K4MZZ.
No current licensee on record previously held this callsign.