Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4AS callsign genealogy
Currently held by SANTOS RIVERA, ANDERSON
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 WP4AS's current licensee, walking backwards.
- SANTOS RIVERA, ANDERSONPRgranted 2020-03-02cancelled 2020-04-04
Successor callsigns
Callsigns held now by people who previously held WP4AS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4AS, oldest first.
- RODRIGUEZ VELEZ, RISA E PR1997-01-22 → cancelled 2009-01-23
- SANTOS RIVERA, ANDERSON PR2020-04-04 active