Confidence: Medium · Source: FCC ULS · As of 2026-09-12
ND4U callsign genealogy
Currently held by Blair, Dennis E
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 ND4U's current licensee, walking backwards.
- Blair, Dennis ETNgranted 2000-09-06cancelled 2001-06-26
Successor callsigns
Callsigns held now by people who previously held ND4U.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign ND4U, oldest first.
- Blair, Dennis E TN2021-04-02 active
- —— → cancelled 1999-02-03