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

N0IAU

Cancelled

UNDERWOOD, WARREN W

Location: SAINT CHARLES, MO
Class: Technician
Granted: 2017-09-20
Expires: 2027-02-06
FRN: 0004702684

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Vanity availability

Available

Available now

N0IAU cleared its 2-year hold on 2019-11-17. Eligible for vanity application.

Last held by UNDERWOOD, WARREN W (MO).

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

W0WHOcancelled· G
UNDERWOOD, WARREN WMOgranted 2017-11-17cancelled 2026-04-10

License history

0 events

No recorded events.

More vanity slots coming available

From Missouri

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Full history → Vanity availability → Callsign genealogy →