Confidence: Medium · Source: FCC ULS · As of 2026-09-09
N1PUN callsign genealogy
Currently held by O BRIEN, JEFFREY
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 N1PUN's current licensee, walking backwards.
- ALEXANDER, NATHANIEL DCAgranted 2022-03-03cancelled 2023-08-01
Successor callsigns
Callsigns held now by people who previously held N1PUN.
- Alexander, Nathaniel DCAgranted 2024-09-21
All historical holders
Every license row we've seen with the callsign N1PUN, oldest first.
- O BRIEN, JEFFREY MA1993-07-27 → cancelled 2005-07-28
- ALEXANDER, NATHANIEL D CA2023-08-01 → cancelled 2024-09-21