Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4ZB callsign genealogy
Currently held by WILMS, UDO W
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 AI4ZB's current licensee, walking backwards.
- WILMS, UDO WNCgranted 2007-04-26cancelled 2007-06-11
Successor callsigns
Callsigns held now by people who previously held AI4ZB.
No current licensee on record previously held this callsign.