Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4MSP callsign genealogy
Currently held by Piantanida IV, Michael S
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 N4MSP's current licensee, walking backwards.
- Piantanida IV, Michael SNCgranted 2018-10-24cancelled 2018-11-14
Successor callsigns
Callsigns held now by people who previously held N4MSP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4MSP, oldest first.
- DILLARD SR, JERRY W AL2005-05-10 → cancelled 2017-05-11
- Piantanida IV, Michael S NC2018-11-14 active