How do you set the fastest DNS server?

Quick Answer

To set the fastest DNS server, benchmark a few resolvers on your network, choose the lowest-latency stable option, and apply it on your device or router.

Choosing a DNS server by reputation alone is weaker than testing. The fastest resolver is the one that responds quickly and consistently from your exact network path.

Comparison table

DNSProviderPrivacySpeed
1.1.1.1CloudflareHighVery Fast
8.8.8.8Google Public DNSMediumFast
9.9.9.9Quad9HighFast
1.1.1.3Cloudflare FamilyHighFast

Detailed explanation

Use a benchmark tool to compare at least three resolvers at the same time. Focus on average latency, jitter, and timeout behavior. Once you have the winner, set it as primary and keep a strong secondary resolver in place.

Implementation flow

  1. Benchmark at least Cloudflare, Google, and Quad9.
  2. Keep the resolver with the best mix of latency and consistency.
  3. Add a backup resolver that is independent and reliable.
  4. Apply the settings on your computer, phone, or router.
  5. Retest after the change to verify the result.

If you are still deciding which resolver to try, start with what is the fastest DNS server. If you need to undo a change or restore working settings, go next to how to reset a DNS server.

FAQ

What DNS should I try first?

Cloudflare 1.1.1.1, Google 8.8.8.8, and Quad9 9.9.9.9 are solid starting points for benchmarking.

Should I change DNS on one device or the router?

Test on one device first, then move the winning DNS server to the router if you want the whole network to use it.

Do I need a secondary DNS server?

Yes. A secondary resolver improves resilience if the primary resolver becomes slow or unavailable.

How often should I retest DNS?

Retest when you change ISP, router, location, or when network responsiveness noticeably changes.

Test your DNS now

Download DNS Benchmark for free and find the fastest server for your network.