Open Data · head-to-head
Callook.info vs French Address Search
Callook.info is a free, keyless lookup service for FCC-licensed US amateur radio callsigns, returning license status, operator class, name, and registered address as either JSON or XML. A live request for a real callsign returns a wildcard Access-Control-Allow-Origin header with no authentication required, confirming it's safe to call directly from browser code.
geo.api.gouv.fr's address search now redirects to Etalab's Base Adresse Nationale API at api-adresse.data.gouv.fr, which geocodes and reverse-geocodes French addresses down to the housing-unit level from the country's authoritative address registry. Responses come back as GeoJSON FeatureCollections scored by match confidence, and the service is free and keyless for reasonable use.
| Callook.info | French Address Search | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON, XML | GeoJSON |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
Callook.info supports 2 response formats, while French Address Search offers fewer — pick Callook.info for more integration flexibility.