Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5MB callsign genealogy
Currently held by BULLINGTON, MATTHEW 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 W5MB's current licensee, walking backwards.
- BULLINGTON, MATTHEW JOKgranted 2015-11-09cancelled 2018-11-24
Successor callsigns
Callsigns held now by people who previously held W5MB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5MB, oldest first.
- BRAYSHAW, DAVID E TX2006-08-08 → cancelled 2018-11-06
- BULLINGTON, MATTHEW J OK2018-11-24 active