Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP4RC callsign genealogy
Currently held by BONILLA, SIXTO A
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 NP4RC's current licensee, walking backwards.
- BONILLA VEGA, SIXTO APRgranted 2021-08-16cancelled 2021-09-17
Successor callsigns
Callsigns held now by people who previously held NP4RC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NP4RC, oldest first.
- BONILLA, SIXTO A PR2009-03-25 → cancelled 2021-03-18
- BONILLA VEGA, SIXTO A PR2021-09-17 active