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

KP4AZH callsign genealogy

Currently held by COLON, TOMAS

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 KP4AZH's current licensee, walking backwards.

  1. KP3AZHcancelled· A
    COLON, TOMASPRgranted 2006-05-09cancelled 2008-05-02
  2. KP3AIcancelled· A
    COLON, TOMASPRgranted 2002-06-12cancelled 2006-05-09
  3. N2AZH
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held KP4AZH.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KP4AZH, oldest first.

  • MARTINEZ, SALUSTIANO O PR
    1988-08-23 → cancelled 2000-08-24
  • COLON, TOMAS PR
    2018-03-14 active
← Back to KP4AZH License history →