DNS (Domain Name System) translates names like testspeed.space into IP addresses. A slow DNS resolver adds delay before a page even starts loading — especially on the first visit.
Changing DNS will not magically turn 50 Mbps into 500 Mbps, but it can make browsing feel more responsive.
Test Speed After DNS Changes
DNS will not raise Mbps much — but pages can feel faster.
Run Speed Test →Popular Public DNS Options
| Provider | Primary | Secondary | Notes |
|---|---|---|---|
| Cloudflare | 1.1.1.1 | 1.0.0.1 | Fast + privacy-focused |
| 8.8.8.8 | 8.8.4.4 | Reliable worldwide | |
| Quad9 | 9.9.9.9 | 149.112.112.112 | Security blocking |
| OpenDNS | 208.67.222.222 | 208.67.220.220 | Filtering options |
How to Change DNS
- Prefer setting DNS on the router so every device benefits
- Or set DNS on an individual PC/phone for a quick trial
- Flush DNS cache after changing
- Browse normally and compare page open times
💡 Privacy Note
Pick a DNS provider whose logging policy you trust. Speed is not the only criterion.
When DNS Will Not Help
- Your bottleneck is weak WiFi
- Your plan speed is simply too low
- The website's own servers are slow
- A VPN already controls DNS
Confirm Overall Performance
After switching DNS, retest bandwidth and ping for a full picture.
Test Connection →Frequently Asked Questions
- Will changing DNS raise my Mbps?
- No. DNS mainly speeds up how quickly websites start loading, not your plan's download ceiling.
- Which DNS is fastest?
- It depends on your location. Cloudflare (1.1.1.1) and Google (8.8.8.8) are common fast, reliable options.
- Is it safe to switch DNS?
- Yes when you use well-known public resolvers. Review privacy policies if that matters to you.
- How do I know if DNS helped?
- Browse a few sites before and after, and keep an eye on ping at testspeed.space — Mbps should stay similar.