Fastest DNS right now
Live rankings built from real, opt-in user measurements — scoped to your ISP and country when there's enough data, with a separate edge baseline for comparison. This is real-user telemetry, not a lab benchmark.
The ranked table reflects real visitors who ran the speed test and opted in to share their result — not a controlled lab benchmark, so it shifts with whoever has tested recently in this scope. The edge baseline is measured from Cloudflare's network to each resolver and is never blended with the real-user numbers above; it will not match your own device's latency.
What this page shows
The leaderboard
A ranked table of DNS resolvers by median response time, built from real visitors who ran the speed test and chose to share their result — scoped to your ISP when there's enough data, otherwise your country, otherwise global.
How this is measured
When someone runs the DNS speed test and opts in, we record their per-resolver median latency and success rate — nothing about the domains they looked up. Those contributions are grouped by day, country, ASN, and resolver, and the leaderboard reads from that rolling window. The edge baseline is a distinct measurement, taken server-side from Cloudflare's network to each resolver on a schedule; it isn't derived from any visitor's browser and is labelled separately in the table.
Honest limitations
Browser-based, real-user measurements are inherently noisier than a controlled test: device load, Wi-Fi conditions, and background traffic all leak into the numbers, and the contributor mix for a given scope can shift from one day to the next. This is not a lab benchmark — for that, run the speed test or the benchmark yourself, under conditions you control.
Open data
The rankings above are backed by a public dataset, published under a CC-BY-4.0 license — free to reuse, with attribution to testsdns.com. Two read endpoints back it:
- Leaderboard
-
GET https://api.testsdns.com/api/leaderboard?country=&asn=— the current per-scope ranking as JSON, the same data this page reads. - Dataset
-
GET https://api.testsdns.com/api/dataset?format=ndjson|csv— the full aggregated dump (day, scope, resolver, median, sample count), grouped so no single contribution is exposed on its own.
Download the dataset as newline-delimited JSON by
default, or add ?format=csv for CSV.
Embed this leaderboard
Drop this on your own site to show every visitor their own ISP-scoped fastest DNS — it updates live and links back to testsdns.com.
<iframe src="https://testsdns.com/embed/fastest-dns" title="Fastest DNS right now"
width="100%" style="max-width:420px;height:440px;border:0;border-radius:12px" loading="lazy"></iframe>
Append ?theme=dark (or light) to force a theme, or ?country=US
to pin a country.
Fastest DNS right now — frequently asked questions
What does "fastest DNS right now" mean?
It's the median resolver latency reported by real visitors who ran the DNS speed test and opted in to share their result, scoped to your ISP and country when there's enough recent data — falling back to country, then global, otherwise. It updates as new measurements come in, so it reflects who has tested recently in that scope, not a fixed, permanent ranking.
Why does my ISP show "not enough data"?
We only publish an ISP-level ranking once enough distinct visitors from that ISP have contributed a result in the current window — a k-anonymity threshold that keeps any single person's measurement from standing in for the whole scope. Below that threshold the leaderboard widens to your country, and if the country is thin too, it falls back to the global ranking. Running the speed test and opting in helps seed that threshold faster for your ISP.
Is this a benchmark?
No. A benchmark implies a controlled, repeatable test; this is real-user telemetry, contributed voluntarily by whoever happened to run the speed test recently in a given scope. It's noisy, it's sample-dependent, and it can shift as the contributor mix changes. For a controlled, single-connection comparison, run the DNS speed test or the DNS benchmark yourself — this page is a complement to those, not a replacement.
How is my contribution kept private?
If you opt in on the speed test, we send only your resolver medians and success rates — never the domains you looked up or any browsing history, and your IP is never stored. Contributions are aggregated by day, country, ASN, and resolver, and both the leaderboard and the open dataset only ever show groups that clear a minimum-sample threshold, so no single contribution stands out in what we publish.
Where's the raw data?
It's public. The aggregated dataset behind this page is published under a CC-BY-4.0 license as newline-delimited JSON or CSV — see the Open data section below for the exact endpoints. Reuse it with attribution to testsdns.com.