Confidence: Medium · Source: FCC ULS · As of 2026-09-10

K4ISP

Cancelled

KERFOOT, JONATHAN L

Location: BIXBY, OK
Class: Amateur Extra
Granted: 2017-04-19
Expires: 2027-05-11
Previous call: KG4ZVT
FRN: 0008841421

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Vanity availability

Available

Available now

K4ISP cleared its 2-year hold on 2026-03-19. Eligible for vanity application.

Last held by KERFOOT, JONATHAN L (OK).

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 →

Previously held by current licensee

KG4ZVTcancelled· E
KERFOOT, JONATHAN LOKgranted 2003-04-23cancelled 2007-05-11

Prior holders later became

AB4YZactive· E
KERFOOT, JONATHAN LOKgranted 2024-03-19

License history

0 events

No recorded events.

More vanity slots coming available

From Oklahoma

All →

KD5TUY 2026-09-10
KJ5HRK 2026-09-10
KF5RYN 2026-09-11
KF5RYO 2026-09-11
KJ5HQD 2026-09-13

Starting with K4

All →

K4CYG FL · 2026-09-10
K4LWW NC · 2026-09-10
K4ONS NC · 2026-09-10
K4YDD FL · 2026-09-10
K4KLP TN · 2026-09-13

Full history → Vanity availability → Callsign genealogy →