Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB8CO callsign genealogy
Currently held by DURRUM, RANDALL C
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 AB8CO's current licensee, walking backwards.
- DURRUM, RANDYOHgranted 2010-06-01cancelled 2013-07-16
Successor callsigns
Callsigns held now by people who previously held AB8CO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB8CO, oldest first.
- DURRUM, RANDALL C OH1998-05-04 → cancelled 2010-05-05
- DURRUM, RANDY OH2023-06-27 active