Is AliDNS Secure?

Independent privacy and security audit of AliDNS DNS servers, with live monitoring data.

Last updated March 26, 2026

Partial — Some Concerns

AliDNS passes some security checks but is missing support for certain features. Review the details below.

Security Audit Results

Check	Result	Details
DNSSEC Validation	No	Does not validate DNSSEC. Vulnerable to DNS cache poisoning attacks.
NXDOMAIN Hijacking	No	Returns proper NXDOMAIN responses for non-existent domains.
DNS-over-TLS (DoT)	Supported	Encrypted DNS available on port 853. Prevents ISP snooping on DNS queries.
DNS-over-HTTPS (DoH)	Supported	HTTPS-based encrypted DNS available. Works through firewalls and is supported by most browsers.
Logging Policy	Logs retained per Chinese law
Reliability	87%	Based on continuous monitoring from our probe network.

AliDNS DNS Addresses

Type	IP Address
Primary	`223.5.5.5`
Secondary	`223.6.6.6`

Test AliDNS Yourself

Run a live privacy and security check on 223.5.5.5 from your location. Get DNSSEC, NXDOMAIN, encryption, and latency results in seconds.

Run Privacy Check on 223.5.5.5

How AliDNS Compares

See security audits for other DNS providers:

Related Guides

Frequently Asked Questions

Is AliDNS safe to use?

AliDNS passes some security checks but lacks support for certain features like encrypted DNS or DNSSEC. It is adequate for basic use but privacy-conscious users may want a more feature-complete provider.

Does AliDNS log DNS queries?

AliDNS logging policy: Logs retained per Chinese law. Always review the provider's current privacy policy for the latest details.

Does AliDNS support encrypted DNS?

AliDNS supports both DNS-over-TLS (DoT) and DNS-over-HTTPS (DoH), providing full encryption for your DNS queries.

How reliable is AliDNS?

AliDNS (223.5.5.5) has a reliability score of 87% based on our continuous monitoring. This is acceptable uptime.

What are the DNS addresses for AliDNS?

Primary: 223.5.5.5, Secondary: 223.6.6.6. Configure both for redundancy.