Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4PMM callsign genealogy
Currently held by COLON-SANTIAGO, ESDRAS M
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 WP4PMM's current licensee, walking backwards.
- COLON-SANTIAGO, ESDRAS MPRgranted 2008-05-12cancelled 2015-08-21
Successor callsigns
Callsigns held now by people who previously held WP4PMM.
No current licensee on record previously held this callsign.