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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

ND9A callsign genealogy

Currently held by LEAZENBY, MICHAEL K

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 ND9A's current licensee, walking backwards.

  1. WB9IWNcancelled· E
    Sikora, John WINgranted 2012-02-02cancelled 2017-01-10
  2. KB9SLOcancelled· T
    SIKORA, JOHN WINgranted 1998-03-31cancelled 2002-04-26

Successor callsigns

Callsigns held now by people who previously held ND9A.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign ND9A, oldest first.

  • LEAZENBY, MICHAEL K IN
    2004-12-22 → cancelled 2016-12-24
  • Sikora, John W IN
    2017-01-10 active
← Back to ND9A License history →