Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP4PZ callsign genealogy
Currently held by Zorrilla-Negron, Pedro J
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 NP4PZ's current licensee, walking backwards.
- Zorrilla-Negron, Pedro JPRgranted 2010-02-05cancelled 2010-07-27
Successor callsigns
Callsigns held now by people who previously held NP4PZ.
No current licensee on record previously held this callsign.