
IP geolocation with accuracy radius, ASN, and flags for Tor exits, known VPN networks and hosting.
Network Data Labs API is a free Geocoding API that requires apiKey authentication, is served over HTTPS and does not support CORS, so it should be called from a server.
IP geolocation API quickstart: Bearer auth, curl examples, /v0/ip, /v0/asn and bulk endpoints, accuracy radius and fraud flags. Free 1,000 req/month.
Details from networkdatalabs.com.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
The Network Data Labs API is provided by Network Data Labs (networkdatalabs.com). IP geolocation API quickstart: Bearer auth, curl examples, /v0/ip, /v0/asn and bulk endpoints, accuracy radius and fraud flags. Free 1,000 req/month.
Yes. The Network Data Labs API is listed in the Geocoding category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The Network Data Labs API uses apiKey authentication, so you need to register for credentials before making requests.
Not directly. The Network Data Labs API does not allow CORS, so call it from a server, serverless function or proxy instead of front-end JavaScript.
Yes. The Network Data Labs API is served over HTTPS, so it's safe to use in production.