Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3SPM callsign genealogy
Currently held by Mazza III, Serafino P
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 N3SPM's current licensee, walking backwards.
- Mazza III, Serafino PPAgranted 2024-02-21cancelled 2024-03-26
Successor callsigns
Callsigns held now by people who previously held N3SPM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3SPM, oldest first.
- ALLEN, GWEN B MD2004-11-02 → cancelled 2016-11-03
- Mazza III, Serafino P PA2024-03-26 active