Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N6XIO callsign genealogy
Currently held by ROCK, LOUIS R
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 N6XIO's current licensee, walking backwards.
- CRAWFORD, MARK DWAgranted 2009-08-14cancelled 2015-01-23
Successor callsigns
Callsigns held now by people who previously held N6XIO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6XIO, oldest first.
- ROCK, LOUIS R CA2001-02-14 → cancelled 2013-05-15
- CRAWFORD, MARK D CA2025-02-05 active