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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KB4TOX callsign genealogy

Currently held by Cummins, William 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 KB4TOX's current licensee, walking backwards.

  1. NQ2Dactive· E
    Pommells, Chaleb ESDgranted 2021-01-19
  2. KO4KLKcancelled· E
    Pommells, Chaleb EGAgranted 2020-12-23cancelled 2021-01-19

Successor callsigns

Callsigns held now by people who previously held KB4TOX.

  1. NQ2Dcancelled· E
    Cummins, William RALgranted 2013-03-05cancelled 2018-12-27

All historical holders

Every license row we've seen with the callsign KB4TOX, oldest first.

  • Cummins, William R AL
    2008-03-13 → cancelled 2013-03-05
  • Cummins, William R AL
    2018-12-27 active
← Back to KB4TOX License history →