Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1ZY callsign genealogy
Currently held by Black, John 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 N1ZY's current licensee, walking backwards.
- Black, John SMEgranted 2022-10-27cancelled 2023-08-04
Successor callsigns
Callsigns held now by people who previously held N1ZY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1ZY, oldest first.
- DAVIS JR, THOMAS NC2011-04-30 → cancelled 2023-07-15
- Black, John S ME2023-08-04 active