Why your ISP's DNS is slow
When you type youtube.com, your computer asks a DNS server to translate that name into an IP address. By default that server belongs to your ISP. Two problems:
- It's slow. ISP DNS servers are often overloaded, geographically far, and rarely tuned for speed. Lookups take 80–200ms when they should take 10–30.
- It's a tracker. Your ISP logs every domain you visit. In India, they're required to. That browsing history has been used against users in both civil and criminal cases.
The free upgrade
Three excellent public DNS services, all free, all faster than any ISP:
| Provider | Primary | Secondary | Feature |
|---|---|---|---|
| Cloudflare | 1.1.1.1 | 1.0.0.1 | Fastest globally, privacy-first |
| Quad9 | 9.9.9.9 | 149.112.112.112 | Blocks known malware domains |
| Google | 8.8.8.8 | 8.8.4.4 | Reliable, Google logs queries |
Pick Cloudflare if speed is priority. Pick Quad9 if you want built-in malware protection. Avoid Google if you care about Google knowing less about you.
Change it once, for the whole house
Do this at the router level, not per device. Log in at 192.168.1.1 or 192.168.0.1, find WAN/Internet settings, look for DNS. Replace "Automatic" with 1.1.1.1 and 1.0.0.1. Save and reboot router.
Now every laptop, phone, smart TV, and gaming console on your Wi-Fi uses the new DNS. No per-device config, no app, no subscription.
Encrypted DNS (DoH / DoT) — next level
Even with 1.1.1.1, your ISP can still see which domains you look up, because DNS queries go in plain text by default. For actual privacy, enable DNS-over-HTTPS (DoH) or DNS-over-TLS (DoT).
- Windows 11: Settings → Network → Wi-Fi properties → DNS assignment → Manual → Encryption: "Encrypted only (DNS over HTTPS)"
- Android 9+: Settings → Network → Private DNS →
one.one.one.one(ordns.quad9.net) - iOS: install the 1.1.1.1 app or use a config profile
Now your ISP sees encrypted packets to 1.1.1.1, not the list of sites you visit.
Takeaway
Change your DNS — 3-minute router setting. Websites load faster. Your ISP stops building a database of your browsing history. Free, reversible, no software to install.