Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7TOT callsign genealogy
Currently held by West, Mark 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 W7TOT's current licensee, walking backwards.
- West, Mark CWAgranted 2021-05-24cancelled 2022-03-22
Successor callsigns
Callsigns held now by people who previously held W7TOT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7TOT, oldest first.
- WAKABAYASHI, KOICHI WA2007-06-16 → cancelled 2019-05-21
- West, Mark C WA2022-03-22 active