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

W9DTO

Active

ONDRISKA, DENNIS T

Location: MIDLOTHIAN, IL
Class: Amateur Extra
Granted: 2020-05-15
Expires: 2030-07-24
Previous call: WA9YZX
FRN: 0014204440

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Vanity availability

Held

Currently held

W9DTO 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

WA9YZXcancelled· E
ONDRISKA, DENNIS TILgranted 2005-11-01cancelled 2010-07-24

License history

0 events

No recorded events.

More vanity slots coming available

From Illinois

All →

N9QHC 2026-09-09
K9CYV 2026-09-10
KC9WOC 2026-09-10
KD9YXS 2026-09-10
KE9BGG 2026-09-10

Starting with W9

All →

W9HDM IL · 2026-09-21
W9NJH WI · 2026-09-21
W9PJG MA · 2026-09-21
W9LKI IN · 2026-10-07
W9PJF IL · 2026-10-12

Full history → Vanity availability → Callsign genealogy →