A secure DNS client improves privacy and performance by encrypting DNS queries using protocols such as DNS over HTTPS (DoH), DNS over TLS (DoT), or DNS over QUIC (DoQ). The best option depends on the balance between speed, privacy protection, and security features.
Best overall balance (Privacy + Performance)
Cloudflare DNS
- Strong global performance with very low latency
- Supports modern encrypted DNS protocols (DoH, DoT, DoQ)
- Generally considered one of the fastest public DNS resolvers
- Privacy-focused policy with minimal short-term logging
Best suited for users who want high speed, reliability, and good privacy with minimal configuration.
Best privacy and security focused option
Quad9 DNS
- Non-profit DNS service with strong security orientation
- Blocks malicious domains, phishing, and malware sites by default
- Strong privacy policy with no personal data retention
- Slightly slower in some regions compared to Cloudflare
Best suited for users prioritizing security and privacy over maximum speed.
Best for advanced customization
NextDNS
- Highly configurable DNS filtering and policy control
- Supports per-device rules, analytics, and custom blocklists
- Logging can be enabled or fully disabled based on preference
- Performance varies based on configuration and location
Best suited for advanced users who need full control over DNS behavior.
Alternative with built-in filtering
AdGuard DNS
- Provides built-in ad and tracker blocking
- Simple setup with privacy-focused design
- Good performance but generally slightly behind Cloudflare in speed
Conclusion
For most users, Cloudflare DNS provides the best overall balance of privacy, speed, and reliability. Quad9 is better for security-focused use cases, while NextDNS is ideal for users requiring advanced customization and control.