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

K4NP callsign genealogy

Currently held by DiTullio, Donald E

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 K4NP's current licensee, walking backwards.

  1. N1LUactive· E
    WOODSIDE, CHARLES DCTgranted 2023-10-12
  2. N1MUQcancelled· E
    WOODSIDE, CHARLES DCTgranted 2012-05-15cancelled 2013-04-27

Successor callsigns

Callsigns held now by people who previously held K4NP.

  1. W4IIcancelled· E
    FRAZIER, JOHN MMOgranted 2009-03-17cancelled 2018-02-23

All historical holders

Every license row we've seen with the callsign K4NP, oldest first.

  • WOODWARD, VICTOR M CA
    1996-05-02 → cancelled 1998-04-19
  • FRAZIER, JOHN M AL
    2004-08-21 → cancelled 2009-03-17
  • DiTullio, Donald E TN
    2021-01-28 active
← Back to K4NP License history →