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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KO4-prefix vanity callsigns coming available

Vanity slots whose callsigns start with KO4. Sorted by availability date — soonest first.

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Showing 51– 100 of 180

CallsignStateAvailableLast heldLast holderReleased by
KO4EGKGA2027-02-19in 158d2025-02-19Sheldon, Donald DCancelled
KO4UINGA2027-02-19in 158d2025-02-19Holman, JohnCancelled
KO4QJGA2027-02-25in 164d2023-02-26Brant, Wayne WExpired
KO4VEBNC2027-02-26in 165d2025-02-26DeBruin, Nicolas ZCancelled
KO4VQIGA2027-02-28in 167d2025-02-28SANDERS, WILLIAM PCancelled
KO4PMMSC2027-03-01in 168d2025-03-01Yates Jr, Elbert KCancelled
KO4URIFL2027-03-04in 171d2025-03-04Sauls, MarkCancelled
KO4KNYTN2027-03-18in 185d2025-03-18Williams, DonCancelled
KO4NTUNC2027-03-20in 187d2025-03-20Brown Sr, Ross BCancelled
KO4OGITN2027-03-21in 188d2025-03-21McCollum, William ECancelled
KO4UIKY2027-03-22in 189d2023-03-23GRANT, ROBERT AExpired
KO4KJNC2027-03-25in 192d2023-03-26WILEMAN, JAY TExpired
KO4KPVNC2027-03-29in 196d2025-03-29Rego, David JCancelled
KO4FHBFL2027-04-04in 202d2025-04-04Jeske Jr, Donald ECancelled
KO4NOLTN2027-04-04in 202d2025-04-04Shelby, Carson DCancelled
KO4CULGA2027-04-11in 209d2025-04-11Brown, Ethan PCancelled
KO4RQEFL2027-04-11in 209d2025-04-11YU, DONGGUANGCancelled
KO4NZOIN2027-04-18in 216d2025-04-18McFall, JerryCancelled
KO4LIVGA2027-04-19in 217d2025-04-19YOUNG, JOHN TCancelled
KO4NQTGA2027-04-19in 217d2025-04-19Danter Jr, Kenneth LCancelled
KO4QZGGA2027-04-19in 217d2025-04-19McDaniel, Eric LCancelled
KO4VBLFL2027-04-26in 224d2025-04-26Baldwin, William BCancelled
KO4JAYKY2027-04-29in 227d2025-04-29Stiles, James RCancelled
KO4OPMFL2027-04-29in 227d2025-04-29Bernth, RichardCancelled
KO4POCNC2027-05-06in 234d2025-05-06Moore, Landon BCancelled
KO4ZVOTN2027-05-09in 237d2025-05-09MORTON, LARRY DCancelled
KO4RPYFL2027-05-13in 241d2025-05-13TORRES, FrankCancelled
KO4NQFL2027-05-17in 245d2023-05-18POULIN, ROBERT EExpired
KO4QYRTN2027-05-17in 245d2025-05-17Kline, David ECancelled
KO4KSZAL2027-05-20in 248d2025-05-20Forester, Duane ACancelled
KO4HJFGA2027-05-30in 258d2025-05-30Proctor, Jayden ACancelled
KO4RTXNC2027-05-30in 258d2025-05-30Justice, Steven WCancelled
KO4APGFL2027-06-03in 262d2025-06-03Shannon III, Robert JCancelled
KO4GOFVA2027-06-03in 262d2025-06-03Taylor, Cohen GCancelled
KO4QZVTN2027-06-03in 262d2025-06-03Gilbert, Charles JCancelled
KO4DFGNC2027-06-06in 265d2025-06-06CALLOWAY, PAUL JCancelled
KO4OEDFL2027-06-06in 265d2025-06-06SMITH, MICHAEL TCancelled
KO4WTOGA2027-06-17in 276d2025-06-17Candido, Natalie GCancelled
KO4WRMGA2027-06-19in 278d2025-06-19Maher, William RCancelled
KO4SOGNC2027-06-26in 285d2025-06-26Irving, ThomasCancelled
KO4VFITN2027-06-27in 286d2025-06-27Harvey, Robert LCancelled
KO4ETGFL2027-07-11in 300d2025-07-11Pearson, Brian JCancelled
KO4NEPFL2027-07-15in 304d2025-07-15Briner, Nancy ACancelled
KO4RAATN2027-07-15in 304d2025-07-15Fulcher, Keith GCancelled
KO4OUMVA2027-07-19in 308d2025-07-19Brown, Peter BCancelled
KO4PEPKY2027-07-29in 318d2025-07-29Seabolt, Jeremy DCancelled
KO4RGQFL2027-07-29in 318d2025-07-29Rogers, Prissilla LCancelled
KO4KTCFL2027-08-01in 321d2025-08-01Lacher, Robert CCancelled
KO4VQEVA2027-08-12in 332d2025-08-12Jamestown Amateur Radio ClubCancelled
KO4YEDTN2027-08-15in 335d2025-08-15Remote Contest ClubCancelled