Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4US callsign genealogy
Currently held by Vashistha, Nidish
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 AI4US's current licensee, walking backwards.
- Vashistha, NidishIDgranted 2025-01-07cancelled 2025-02-04
Successor callsigns
Callsigns held now by people who previously held AI4US.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AI4US, oldest first.
- Phillips, Robert A FL2007-03-09 → cancelled 2019-03-12
- Vashistha, Nidish ID2025-02-04 active