Why DNS over HTTPS?
Your ISP sees every domain you visit through DNS queries. DoH encrypts them:
- Encrypted queries — ISP can’t see your DNS lookups.
- Uses port 443 — Looks like normal HTTPS, hard to block.
- Fast — Cloudflare and Google DoH are faster than most ISP DNS.
- Built into browsers — Firefox and Chrome support it natively.
Windows 11
- Settings > Network & Internet > Wi-Fi (or Ethernet).
- Click your connection > DNS server assignment > Edit.
- Set Preferred DNS to
1.1.1.1.
- Under DNS over HTTPS, select On (manual template).
- Set Alternate DNS to
1.0.0.1.
macOS
macOS doesn’t have a native DoH toggle. Options:
# Option 1: Install dnscrypt-proxy
brew install dnscrypt-proxy
# Edit /usr/local/etc/dnscrypt-proxy.toml to use DoH servers
sudo brew services start dnscrypt-proxy
# Option 2: Install Apple configuration profile for Cloudflare DoH
# Download from https://1.1.1.1/dns/ and install the .mobileconfig
Firefox
- Settings > Privacy & Security > scroll to DNS over HTTPS.
- Select Max Protection.
- Choose provider: Cloudflare (default) or Custom.
Chrome / Edge
- Settings > Privacy and Security > Security.
- Toggle Use secure DNS.
- Select Cloudflare (1.1.1.1) or custom.
DNS Provider Comparison
| Provider | Primary | Secondary | DoH URL | Features |
|---|
| Cloudflare | 1.1.1.1 | 1.0.0.1 | https://cloudflare-dns.com/dns-query | Fastest, privacy-first, no logging |
| Google | 8.8.8.8 | 8.8.4.4 | https://dns.google/dns-query | Reliable, wide availability |
| Quad9 | 9.9.9.9 | 149.112.112.112 | https://dns.quad9.net/dns-query | Blocks malware domains |
| NextDNS | Custom | Custom | https://dns.nextdns.io/ID | Custom filtering, ad blocking |
| AdGuard | 94.140.14.14 | 94.140.15.15 | https://dns.adguard-dns.com/dns-query | Ad + tracker blocking |
DoH vs DoT vs Plain DNS
| Feature | Plain DNS | DNS over TLS (DoT) | DNS over HTTPS (DoH) |
|---|
| Encryption | None | TLS | HTTPS |
| Port | 53 | 853 | 443 |
| Blockable? | No (needed) | Yes (port 853) | Hard (blends with HTTPS) |
| Browser support | N/A | N/A | Firefox, Chrome, Edge |
| ISP can see queries | Yes | No | No |
| Best for | Legacy | Enterprise control | Privacy |
Troubleshooting
| Problem | Solution |
|---|
| DNS resolution slower after DoH | Try a different provider; Cloudflare is usually fastest |
| Corporate network blocks DoH | IT may require plain DNS for monitoring; use DoT as compromise |
| Some sites not resolving | Quad9 blocks malware domains by default; switch to Cloudflare for unfiltered |
| Can’t verify DoH is working | Visit 1.1.1.1/help to check if DoH is active |
Summary
- Encrypt your DNS to prevent ISP snooping.
- Windows 11 + Firefox + Chrome have built-in DoH support.
- Cloudflare 1.1.1.1 is the fastest and most private provider.
- Combine with a VPN for complete traffic privacy.
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