Find any FCC call sign.
Amateur & GMRS, in one place.

Search the entire US licence database by call sign, name, city, or state. Free. Fast. With a documented public API.

Tip: try sort=newest to spot brand-new licences. ?q=jay&state=MN&sort=newest
Total licences
2270502
Active
1261907
States & territories
134
Last refreshed
2026-05-08
See full stats →

Two services, one search

Look up Amateur Radio and GMRS together. We join across services by FRN so you can see every call sign one operator holds.

Public API

Every page is also a JSON endpoint. Build apps on top of OpenCallbook with our OpenAPI 3.1 spec. No scraping required.

Fresh weekly

We pull the FCC's official weekly dump every Sunday. New licences surface within hours of being issued — search with ?sort=newest.