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

AI4BZ

Active

Haefner, Thomas J

Location: MIDDLEBURG, FL
Class: Amateur Extra
Granted: 2022-10-04
Expires: 2032-10-22
Previous call: KG4ZRN
FRN: 0007788920

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Vanity availability

Held

Currently held

AI4BZ is held by an active license; it isn't a vanity slot right now.

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).

Callsign genealogy

Full chain →

Previously held by current licensee

KG4ZRNcancelled· E
Haefner, Thomas JFLgranted 2002-10-22cancelled 2003-10-14
KG4VQCcancelled· G
Haefner, Thomas JFLgranted 2002-10-22cancelled 2003-04-16

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

K4CYG 2026-09-10
K4YDD 2026-09-10
KG4QXI 2026-09-10
KG4RVV 2026-09-10
KG4VAB 2026-09-10

Starting with AI4

All →

AI4LB FL · 2026-09-18
AI4BO FL · 2026-11-20
AI4QU TN · 2026-11-29
AI4FC MA · 2026-12-16
AI4ES KY · 2026-12-31

Full history → Vanity availability → Callsign genealogy →