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

NP4DY callsign genealogy

Currently held by CRESPO-RODRIGUEZ, RUBEN

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 NP4DY's current licensee, walking backwards.

  1. WP4RCactive· E
    Resto Jimenez, CHRISTOPHER JPRgranted 2022-08-26
  2. KP4CRJcancelled· G
    RESTO JIMENEZ, CHRISTOPHER JPRgranted 2021-08-23cancelled 2022-08-26
  3. WP4RVQcancelled· T
    RESTO JIMENEZ, CHRISTOPHER JPRgranted 2021-06-28cancelled 2021-08-23

Successor callsigns

Callsigns held now by people who previously held NP4DY.

  1. KP4DYcancelled· E
    CRESPO-RODRIGUEZ, RUBENPRgranted 2018-06-05cancelled 2025-07-22
← Back to NP4DY License history →