DNS Resolver Benchmark

    Measure how fast six major public DoH resolvers respond from your browser's location. Each resolver is queried for five common domains and the median is reported.

    Only Google and Cloudflare officially enable CORS on their DoH endpoints, so only they can be measured directly from a browser. Quad9, AdGuard, Mullvad and OpenDNS refuse browser requests — turn on the proxy fallback below to measure them via corsproxy.io. Those timings then include the proxy round-trip, so treat them as indicative and only compare direct-vs-direct or proxy-vs-proxy resolvers.