DNS Speed Test Guide: Why Your DNS Provider Matters
Every time you visit a website, your device asks a DNS server to translate the domain name (like speedexa.site) into an IP address. If that DNS server is slow, every page load is slower — even with fast internet.
What is DNS?
DNS (Domain Name System) is the internet's phonebook. It maps human-readable domain names to machine-readable IP addresses. Without DNS, you'd have to type 104.21.32.1 instead of speedexa.site.
How DNS Resolution Time Affects You
- Page loads: Every new domain costs 20–300 ms of DNS lookup
- Streaming: Slow DNS = slow start times
- Gaming: Affects matchmaking and lobby loads
- First visit impact: Cached DNS = instant (but first visit always needs lookup)
DNS Provider Comparison
| Provider | Primary IP | Typical Speed |
|---|---|---|
| Cloudflare | 1.1.1.1 | ~10–20 ms |
| 8.8.8.8 | ~15–30 ms | |
| Quad9 | 9.9.9.9 | ~20–40 ms |
| OpenDNS | 208.67.222.222 | ~25–50 ms |
| ISP default | Varies | ~30–200 ms |
Speed varies by region and ISP. That's why you should test your own connection rather than trust generic recommendations.
How to Test Your DNS
SPEEDEXA's DNS test measures real resolution time against 5 major providers using DNS-over-HTTPS. It runs in your browser and doesn't require any software.
You'll see:
- Resolution time for each provider
- Success/failure rate
- Fastest and slowest providers
- Recommendations based on your results
How to Switch DNS Providers
Windows 10/11
- Settings → Network & Internet → Wi-Fi/Ethernet
- Click your network → Edit DNS
- Set Manual → IPv4:
1.1.1.1,1.0.0.1 - Save
macOS
- System Settings → Network
- Click your network → Details → DNS
- Click + → Add
1.1.1.1and1.0.0.1 - Click OK
Android
- Settings → Network → Private DNS
- Enter
1dot1dot1dot1.cloudflare-dns.com - Save
iOS
iOS doesn't have built-in custom DNS unless using a configuration profile. Use an app like "1.1.1.1" or "DNSCloak".
Router (best for whole home)
- Login to
192.168.1.1 - Find DNS settings in WAN or Internet section
- Set to
1.1.1.1and1.0.0.1 - Save and reboot
Test your DNS speed
SPEEDEXA measures real DNS resolution against 5 providers.
⚡ Run DNS Test on SPEEDEXAFrequently Asked Questions
Is DNS over HTTPS (DoH) better?
DoH encrypts your DNS queries, improving privacy. It's also often faster than plain DNS. Cloudflare, Google, and Quad9 all support DoH.
Will changing DNS improve my speed?
DNS only affects the lookup phase — not download/upload speeds. If your ISP DNS is slow (>100 ms), switching can shave 50–200 ms off first-visit page loads.
Does DNS affect gaming?
Not directly. In-game ping is determined by server distance, not DNS. But DNS affects matchmaking, lobby loads, and patch downloads.
Which DNS should I use?
Run SPEEDEXA's DNS test first. Whichever provider is fastest for your ISP and location is the best choice. Don't assume Cloudflare is fastest for everyone.
Summary
DNS resolution time matters more than most people realize. Test your current provider, switch to a faster one, and enjoy measurably faster page loads.
The best part: changing DNS is free, reversible, and takes 30 seconds.