Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP4LR callsign genealogy
Currently held by PABON OLIVENCIA, EFRAIN
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 NP4LR's current licensee, walking backwards.
- Rodriguez-Gonzalez, Luis APRgranted 2008-06-05cancelled 2009-10-16
Successor callsigns
Callsigns held now by people who previously held NP4LR.
- Rodriguez-Gonzalez, Luis APRgranted 2022-05-17
All historical holders
Every license row we've seen with the callsign NP4LR, oldest first.
- PABON OLIVENCIA, EFRAIN PR1994-12-19 → cancelled 2006-12-20
- Rodriguez-Gonzalez, Luis A PR2009-10-16 → cancelled 2012-08-03