Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9MLS callsign genealogy
Currently held by BLOCK, IRA 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 N9MLS's current licensee, walking backwards.
- SHEARER, MARY LILgranted 2024-05-22cancelled 2024-06-11
Successor callsigns
Callsigns held now by people who previously held N9MLS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9MLS, oldest first.
- BLOCK, IRA J IL1991-08-27 → cancelled 2003-08-28
- SHEARER, MARY L IL2024-06-11 active