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KO4IRN

Available2x3District 4

No competing applications on record.

License HolderLeben, Mitchell J

License ClassGeneral

Min. Class RequiredTechnician

LocationHouston, TX

Grant DateOct 21, 2020

Expiration DateOct 21, 2030

Cancellation DateApr 24, 2021

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KO4IRN

Available2x3District 4

No competing applications on record.

License HolderLeben, Mitchell J

License ClassGeneral

Min. Class RequiredTechnician

LocationHouston, TX

Grant DateOct 21, 2020

Expiration DateOct 21, 2030

Cancellation DateApr 24, 2021

Available for ApplicationsApr 25, 2023

KO4IRN is a 2x3 format amateur radio callsign. It is currently registered to Leben, Mitchell J in Houston, TX. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.

CW & Voice Analysis

Morse Code

-.- --- ....- .. .-. -.

CW Weight: 34 units(Moderate)

Voice Phonetics

Kilo Oscar Four India Romeo November

Readability: 6/10(Good readability)

This callsign is available now

Requires Technician license or higher to apply for this callsign format (2x3).

License History

License CanceledApr 24, 2021
System-Generated GrantOct 21, 2020
License IssuedOct 21, 2020

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

No competing applications on record. Verify on the FCC ULS application search before filing.

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FCC data as of Sep 4, 2026

Is KO4IRN Available? FCC Vanity Status & Watchlist