Quad9 DNS-Server

Addresses and domains for Quad9

IPv4 addresses

IPv6 addresses

Auth-Name (DoT): Auth-Name (DoH): TLS-Port:

Quad9 offers two additional DNS servers, whose addresses and domains are mentioned below.

For more information:
Service Addresses & Features | Quad9

Quad9 Slogan

About Quad9

An open DNS recursive service for free security and high privacy.
Quad9 blocks the query of malicious host names from a up-to-the-minute list of threats.

This blocking protects your computer, mobile device, or IoT systems from a variety of threats such as malware, phishing, spyware, and botnets, and can improve performance in addition to ensuring privacy. The Quad9 DNS service is operated by the Swiss-based Quad9 Foundation, whose goal is to create a safer and more stable Internet for all.

Quad9 | A public and free DNS service for a better security and privacy

Quad9 Logo

Use with apps

To use this DNS server in Stubby, add the following block to the configuration file. Instructions can be found here <- currently only availabel in German).

Use with apps

Quad9 offers the following applications. These applications make it unnecessary to change the settings in the device’s operating system.

Quad9 Connect App for Android

via Google Play / This app is still in the development phase. It may be unstable.

Properties above Quad9

  • IPv4
  • IPv6
  • DNS64 is not supported by the provider
  • DNS-over-HTTPS (DoH)
  • DNS-over-TLS (Dot)
  • Applications for establishing a connection:
    • Android
  1. Automatically blocks maleware
  2. Free
  3. International
  4. Reliable
  5. Secure
Evaluation and reliability

DNSChoice.eu does not have the resources to provide a durable and reliable assessment of this DNS server. We refer here to DNSPerf.com from the Polish company PerfOps.


Under the control of: SWITCH c/o swissuniversities , Switzerland

Additional Quad9 DNS servers

Quad9 offers several different services for recursive DNS features. Each is represented by a different IP address (or in some cases, a host name) that you use to configure your systems.

Quad9 Secured w/ECS

Malware blocking, DNSSEC validation, ECS enabled

IPv4 addresses

IPv6 addresses

Auth-Name: TLS-Port:

Quad9 Unsecured

No malware blocking, no DNSSEC validation (recommended by the provider only for experts!)

IPv4 addresses

IPv6 addresses

Auth-Name: TLS-Port:
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