Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4LIB callsign genealogy
Currently held by ARMSTRONG, BRENT D
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 N4LIB's current licensee, walking backwards.
- ARMSTRONG, BRENT DKYgranted 2016-12-20cancelled 2018-06-12
Successor callsigns
Callsigns held now by people who previously held N4LIB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4LIB, oldest first.
- BOLT, JUDITH D AZ2005-12-15 → cancelled 2018-03-15
- ARMSTRONG, BRENT D KY2018-06-12 active