Callook.info (Ham Radio)
Look up United States amateur radio callsign data from the FCC license database as JSON.
Callook.info (Ham Radio) is listed in Open Data.
Key metrics
No published cap Rate limit Free, keyless US callsign lookup; no published rate limit (fair use).
Gotchas
No gotchas documented yet. Contribute one if you know a constraint we missed.
Labels
- No auth
No auth
Callable with no API key or login — lowest-friction to integrate.
radio callsign fcc amateur reference