Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA1ZBZ callsign genealogy
Currently held by Croughwell, Dennis T
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 WA1ZBZ's current licensee, walking backwards.
- CROUGHWELL, DENNIS TMAgranted 2023-03-09cancelled 2023-03-28
Successor callsigns
Callsigns held now by people who previously held WA1ZBZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA1ZBZ, oldest first.
- CROUGHWELL, DENNIS T MA2004-02-03 → cancelled 2016-04-27
- Croughwell, Dennis T MA2023-03-28 active