Radio Tools

Callsign Lookup

Curious about a callsign you heard on the air? Use a callsign lookup to explore available license information.

Callsigns can change hands over time. A current license record identifies the current holder; it does not necessarily identify someone who used that callsign in the past.

Look up a U.S. callsign

U.S. only U.S. amateur license records, supplied by Callook using FCC data. For other countries, consult a relevant licensing authority or an international callbook.

Enter a callsign above to see the current license record from the source.

About this lookup

What you’ll see The current license holder’s name, mailing address on the license record, callsign, license class, record type and dates, when supplied by the source. A mailing address may be a P.O. box or other correspondence address; it does not identify a station’s location. Email addresses are not supplied by this source.
Current records only A license record is not proof of who spoke on the air. An older callsign may lead to a different current callsign.
Where your search goes The callsign you enter is sent to the lookup source, Callook, to find the record. The source may keep its own service logs.

Other ways to look up a callsign

These links leave the WN4AFT website and open the source directly.

U.S. records

Callook

U.S. amateur license records based on FCC data.
Open Callook (external website)
Official U.S. source

FCC ULS license search

The FCC’s Universal Licensing System search.
Open FCC license search (external website)
International profiles

HamQTH callbook

Operator profiles from many countries. Not an official licensing authority.
Open HamQTH (external website)

Looking for a repeater instead? Find a Repeater

Callsign Lookup

Look up a U.S. callsign

Other ways to look up a callsign

Callook

FCC ULS license search

HamQTH callbook