Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1DNZ callsign genealogy
Currently held by SANBORN JR, WARREN J
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 K1DNZ's current licensee, walking backwards.
- MAC KENZIE, STEPHEN GMAgranted 2011-10-26cancelled 2018-10-12
Successor callsigns
Callsigns held now by people who previously held K1DNZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1DNZ, oldest first.
- SANBORN JR, WARREN J NH1996-03-18 → cancelled 2008-03-19
- MAC KENZIE, STEPHEN G MA2018-10-12 active