Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WP4IUA callsign genealogy
Currently held by NIEVES TORRES, RAMON F
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 WP4IUA's current licensee, walking backwards.
- NIEVES TORRES, RAMONPRgranted 2021-07-12cancelled 2021-07-30
Successor callsigns
Callsigns held now by people who previously held WP4IUA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4IUA, oldest first.
- NIEVES TORRES, RAMON F PR2000-01-08 → cancelled 2012-02-28
- NIEVES TORRES, RAMON PR2021-07-30 active