IPDetails.io – IP Geolocation & Threat Intelligence API

IPDetails is a freemium IP geolocation and threat intelligence API for developers and security teams. Query geo, WHOIS, ASN, and abuse data, identify hosting, residential, and business networks, and detect Tor, proxy, and VPN traffic with responses around 10 ms. Use EU and USA coverage, a free core tier, and an offline database for analytics, fraud prevention, and security workflows.