IPDetails.io

IPDetails.io gives developers one practical endpoint for IP context: geolocation, WHOIS, ASN details, traffic classification, and abuse scoring. The Core API is free with no rate limits on standard lookups, with roughly 10ms responses from servers in Europe and the USA. Identify hosting, residential ISP, and business traffic; flag Tor exits, open proxies, and VPNs; or run the offline database in your own environment.