Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WP4NI callsign genealogy
Currently held by RIVERA MARTINEZ, VANGELIS N
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 WP4NI's current licensee, walking backwards.
- RIVERA MARTINEZ, VANGELIS NPRgranted 2022-06-22cancelled 2022-07-16
Successor callsigns
Callsigns held now by people who previously held WP4NI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4NI, oldest first.
- MILLAN, CONCHITA PR1988-03-15 → cancelled 2000-03-16
- RIVERA MARTINEZ, VANGELIS N PR2022-07-16 active