Confidence: Medium · Source: FCC ULS · As of 2026-09-09

KC3PWN

Cancelled

Butler IV, John R

Location: Bel Air, MD
Class: Amateur Extra
Granted: 2020-08-24
Expires: 2030-08-24
FRN: 0029877396

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Vanity availability

Available

Available now

KC3PWN cleared its 2-year hold on 2025-11-02. Eligible for vanity application.

Last held by Butler IV, John R (MD).

Confidence: High

Cancelled licenses begin the 2-year hold immediately, so this date is the firm release date per §97.19. Already past — fileable subject to FCC verification.

Callsign genealogy

Full chain →

Prior holders later became

WI3Yactive· E
Butler IV, John RMDgranted 2023-11-03

License history

0 events

No recorded events.

More vanity slots coming available

From Maryland

All →

KB3INT 2026-09-09
KC3ZRU 2026-09-09
N3BYL 2026-09-09
N3JTJ 2026-09-12
KB3ZFH 2026-09-13

Starting with KC3

All →

KC3ZRU MD · 2026-09-09
KC3ZNR PA · 2026-09-10
KC3ZQJ PA · 2026-09-10
KC3MJH MD · 2026-09-13
KC3WYD PA · 2026-09-13

Full history → Vanity availability → Callsign genealogy →