Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP3CD callsign genealogy
Currently held by CRUZ- RUIZ, CARLOS 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 NP3CD's current licensee, walking backwards.
- Diaz Medina, ChristianPRgranted 2020-11-16cancelled 2020-12-11
Successor callsigns
Callsigns held now by people who previously held NP3CD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NP3CD, oldest first.
- CRUZ- RUIZ, CARLOS F PR2006-04-18 → cancelled 2018-06-22
- Diaz Medina, Christian PR2020-12-11 active