Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0TLD callsign genealogy
Currently held by Cathcart, Michael M
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 N0TLD's current licensee, walking backwards.
- Cathcart, Michael MMOgranted 2017-11-21cancelled 2017-12-15
Successor callsigns
Callsigns held now by people who previously held N0TLD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0TLD, oldest first.
- FLEMING, CAROLE A MO2002-06-13 → cancelled 2014-09-03
- Cathcart, Michael M MO2017-12-15 active