Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB4ZZT callsign genealogy
Currently held by PIPER, JOHN A
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 WB4ZZT's current licensee, walking backwards.
- PIPER, JOHN AKYgranted 2009-05-06cancelled 2012-12-14
Successor callsigns
Callsigns held now by people who previously held WB4ZZT.
No current licensee on record previously held this callsign.