Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4NCB callsign genealogy
Currently held by Colon-Barrios, Nestor
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 KP4NCB's current licensee, walking backwards.
- Colon-Barrios, NestorPRgranted 2018-05-15cancelled 2018-06-02
Successor callsigns
Callsigns held now by people who previously held KP4NCB.
- Colon-Barrios, NestorPRgranted 2021-07-02