The Callsign Toolkit
for Amateur Radio
Search 1.6 million FCC amateur radio licenses, research vanity callsigns, and access live data via API — all in one place.
Vanity Call Research
Find available vanity callsigns by region, prefix, or suffix. See when cancelled and expired callsigns become eligible for application.
Open Vanity Research →License Statistics
Explore aggregated FCC data — license counts by state, operator class distribution, growth trends, and most active club regions.
Coming SoonExpiring Licenses
Browse licenses expiring in the next 90 days. Useful for clubs and trustees to keep tabs on renewals before they lapse.
View Expiring →Club Lookup
Search for club station licenses, find trustees, and browse member callsigns associated with a club. Filter by state or ARRL section.
Coming SoonDeveloper API
Query the CallsignTools database programmatically. Look up any callsign and get structured JSON back — perfect for logging software, apps, and integrations.
View Docs →License Map
Visualize amateur radio license density across the US. Filter by operator class, zoom into counties, and explore regional activity.
Open Map →