Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC0EIP callsign genealogy
Currently held by PFINGSTEN, MARK J
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 KC0EIP's current licensee, walking backwards.
- PFINGSTEN, MARK JMOgranted 2014-07-29cancelled 2026-08-01
Successor callsigns
Callsigns held now by people who previously held KC0EIP.
- PFINGSTEN, MARK JMOgranted 2014-07-29cancelled 2026-08-01