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This is a fast, free mirror of the FCC's Universal Licensing System data for the amateur radio service, run by N9TPB in Madison, Wisconsin.

The complete FCC amateur database (1,697,007 license records) is downloaded every Sunday, and the FCC's daily transaction file is applied every night. The daily changes page is built from those nightly files.

Available call signs are calculated from the FCC data: a call sign is listed when it was previously issued, no license currently holds it, and at least two years and a day have passed since the last license for it expired or was canceled. The FCC's vanity system is the final word — check there before you apply.

Last full load: 2026-09-30T15:41:06 · last daily update: 2026-09-29