Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4NS callsign genealogy
Currently held by DIAZ, SANTIAGO E
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 KP4NS's current licensee, walking backwards.
- SANTIAGO, NELSONPRgranted 2012-10-24cancelled 2014-04-04
Successor callsigns
Callsigns held now by people who previously held KP4NS.
- SANTIAGO, NELSONPRgranted 2017-08-08
All historical holders
Every license row we've seen with the callsign KP4NS, oldest first.
- DIAZ, SANTIAGO E PR1997-01-27 → cancelled 2000-03-02
- SANTIAGO, NELSON PR2014-04-04 → cancelled 2017-08-08