Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3RDD callsign genealogy
Currently held by Poplawski, Christopher J
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 N3RDD's current licensee, walking backwards.
- Poplawski, Christopher JPAgranted 2018-10-04cancelled 2026-04-11
Successor callsigns
Callsigns held now by people who previously held N3RDD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3RDD, oldest first.
- IBANEZ, HUMBERTO MD2013-09-25 → cancelled 2026-03-06
- Poplawski, Christopher J PA2026-04-11 active