my ip address, dns leak test, webrtc leak test, ipv6 leak test, http headers, ip whois - browserleaks
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the primary tool that illustrates server-side capabilities to reveal the user's identity. it has basic features such as showing your ip address and http headers, ip-based geolocation (geoip) determines your country, state, city, isp/asn, local time. there's also tcp/ip os fingerprinting, webrtc leak tests, dns leak test, ipv6 leak test.