Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NT0K callsign genealogy
Currently held by COOKSON, CLIFFORD B
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 NT0K's current licensee, walking backwards.
- KN4UAMcancelledPROVIDENCE HILLS CONTEST TEAMNCgranted 2019-04-19cancelled 2019-05-14
Successor callsigns
Callsigns held now by people who previously held NT0K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NT0K, oldest first.
- COOKSON, CLIFFORD B CO2007-04-24 → cancelled 2019-04-25
- PROVIDENCE HILLS CONTEST TEAM NC2019-05-14 active