Best DNS for Ad Blocking 2026
DNS-level ad blocking stops ads, trackers, and malware before they reach your device. Unlike browser extensions, it works on every app and device on your network — phones, smart TVs, game consoles, and IoT devices.
Updated March 2026 · All providers independently verified with live probe data
Why use DNS for ad blocking?
- Network-wide protection — set it on your router and every device is covered, no per-device setup
- Blocks in-app ads — browser extensions only work in the browser; DNS blocking works in all apps
- Faster page loads — blocked domains never connect, reducing HTTP requests and bandwidth
- No software to install — change your DNS settings once and you are done
Best ad-blocking DNS providers
AdGuard DNS
Blocks ads and trackers at the DNS level. Supports DoH, DoT, DoQ, and DNSCrypt. Based in Cyprus, no PII logged.
94.140.14.14
94.140.15.15
Blocks: Ads, Trackers, Malware
94.140.14.14: 100.0% reliability, DNSSEC, 38.0ms 94.140.15.15: 100.0% reliability, DNSSEC, 31.0ms
NextDNS
Fully customizable blocklists with a web dashboard. Free tier covers 300,000 queries/month. User-controlled logging.
45.90.28.0
45.90.30.0
Blocks: Ads, Trackers, Malware · Customizable blocklists
45.90.28.0: 100.0% reliability, DNSSEC, 41.0ms 45.90.30.0: 100.0% reliability, DNSSEC, 38.0ms
CleanBrowsing Security
Focused on malware and phishing protection. Does not block ads by default. Good baseline security filter for any network.
185.228.168.9
185.228.169.9
Blocks: Malware, Phishing
185.228.168.9: 100.0% reliability, DNSSEC, 39.0ms 185.228.169.9: 98.2% reliability, DNSSEC, 40.0ms
Control D
Granular content filtering with free and paid tiers. Supports DoH, DoT, and DoQ. No logs on free tier.
76.76.2.0
76.76.10.0
Blocks: Ads, Trackers, Malware · Customizable blocklists
76.76.2.0: 100.0% reliability, DNSSEC, 9.0ms 76.76.10.0: 100.0% reliability, DNSSEC, 7.0ms
Quad9
Swiss nonprofit. Blocks known-malicious domains using 25+ threat intelligence feeds. No personal data logged. Does not block ads.
9.9.9.9
149.112.112.112
Blocks: Malware, Phishing
9.9.9.9: 100.0% reliability, DNSSEC, 7.0ms 149.112.112.112: 100.0% reliability, DNSSEC, 7.0ms
Mullvad DNS
Privacy-first DNS with ad and tracker blocking variant. Zero logs, no accounts. Run by the Swedish VPN provider Mullvad.
194.242.2.9
194.242.2.10
Blocks: Ads, Trackers
Comparison table
| Provider | Ads | Trackers | Malware | Customizable | DNSSEC |
|---|---|---|---|---|---|
| AdGuard DNS | Yes | Yes | Yes | No | Yes |
| NextDNS | Yes | Yes | Yes | Yes | Yes |
| CleanBrowsing Security | No | No | Yes | No | Yes |
| Control D | Yes | Yes | Yes | Yes | Yes |
| Quad9 | No | No | Yes | No | Yes |
| Mullvad DNS | Yes | Yes | No | No | — |
How DNS ad blocking works
When your device requests a domain like ads.tracker.example.com, the DNS server checks it against a blocklist. If the domain is on the list, the server returns 0.0.0.0 or NXDOMAIN instead of the real IP address. Your device never connects to the ad server, so the ad never loads.
This happens before any HTTP connection is made, which means blocked content never consumes bandwidth. It also works for HTTPS ads that browser extensions sometimes struggle with.
Setup guides
Change your DNS to one of the providers above using these platform-specific guides:
For maximum ad blocking, combine DNS-level blocking with Pi-hole on your local network.
Related resources
- Best DNS Servers — overall rankings for speed, privacy, and security
- Best Private DNS — no-log providers with encrypted DNS
- Best Family DNS — content filtering for children
- DNS Privacy Check — audit your current DNS
Frequently asked questions
Does DNS-level ad blocking work on all devices?
Yes. When set on your router, DNS-level ad blocking applies to every device on the network including phones, smart TVs, and IoT devices. No browser extension required.
Is DNS ad blocking better than browser extensions?
DNS blocking covers all apps and devices on your network, not just the browser. However, browser extensions like uBlock Origin are more precise at cosmetic filtering. The best approach is to use both together.
Will DNS ad blocking break websites?
Occasionally. Some sites detect ad blockers and restrict access. DNS-level blocking is less aggressive than browser extensions, so breakage is rare. If a site breaks, you can temporarily switch to an unfiltered resolver.
Which DNS blocks the most ads?
NextDNS and Control D offer the most customizable blocklists. AdGuard DNS has the best built-in default blocklist. For maximum coverage, use NextDNS with multiple community blocklists enabled.