Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4CIW callsign genealogy
Currently held by UNDERWOOD III, THEOPHILUS B
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 N4CIW's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held N4CIW.
- UNDERWOOD III, THEOPHILUS BFLgranted 2022-11-08