Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6MAZ callsign genealogy
Currently held by MASZCZAK, MATTHEW J
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 W6MAZ's current licensee, walking backwards.
- Zakikhani, MaziarCAgranted 2014-06-24cancelled 2014-08-02
Successor callsigns
Callsigns held now by people who previously held W6MAZ.
- MASZCZAK, MATTHEW JCAgranted 2011-08-30cancelled 2013-01-29
All historical holders
Every license row we've seen with the callsign W6MAZ, oldest first.
- SCHIERLOH, JOSEPH CA1989-11-07 → cancelled 2002-03-07
- MASZCZAK, MATTHEW J CA2009-09-01 → cancelled 2011-08-30
- Zakikhani, Maziar CA2014-08-02 → cancelled 2026-08-06