Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP3OO callsign genealogy
Currently held by ROLON RIVERA, JOSE
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 NP3OO's current licensee, walking backwards.
- ROLON RIVERA, JOSEPRgranted 2020-03-02cancelled 2020-03-24
Successor callsigns
Callsigns held now by people who previously held NP3OO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NP3OO, oldest first.
- FEBRES FEBRES, BENJAMIN PR1997-06-23 → cancelled 2009-06-24
- ROLON RIVERA, JOSE PR2020-03-24 active