Quad9 Application

The following page provides details on domains, networks, IPs, hosting services, and content delivery networks used by Quad9.

What is Quad9?

Quad9 Logo

Quad9 - Cybersecurity
Quad9 is a global public recursive DNS resolver that aims to protect users from malware and phishing.


Quad9 Domains

Primary Domains


Network Ranges

  • 9.9.9.0/24
  • 68.65.126.0/23
  • 147.72.242.0/24
  • 149.112.112.0/24
  • 149.112.149.0/24
  • and 3 more

Quad9 uses dedicated network blocks. This application dataset includes only those network ranges exclusively assigned to this service.


Protocol and Port Statistics

Protocol Port
DoH TCP 443
DoT TCP 853
HTTPS TCP 443

The table provides a breakdown of the primary protocols and ports utilized across the Quad9 network infrastructure.


Quad9 Network

Some organizations deploy all or parts of an application solution through their own infrastructure instead of third party hosting providers like AWS or Google Cloud Platform. The following is a sample of active IP addresses on the Quad9 Network.

Sample IP ASN
2620:fe::11 AS19281
2620:fe::10 AS19281
2620:fe::fe AS19281
2620:fe::12 AS19281
2620:fe::fe:9 AS19281
2620:fe::fe:10 AS19281
2620:fe::fe:11 AS19281
2620:fe::9 AS19281
2620:fe::fe:12 AS19281
9.9.9.9 AS19281
9.9.9.10 AS19281
9.9.9.11 AS19281
9.9.9.12 AS19281
9.9.9.13 AS19281
68.65.126.5 AS398891
68.65.126.6 AS398891
68.65.126.7 AS398891
68.65.126.8 AS398891
68.65.126.9 AS398891
68.65.126.10 AS398891
68.65.126.11 AS398891
68.65.126.12 AS398891
68.65.126.13 AS398891
68.65.126.14 AS398891
68.65.126.15 AS398891
68.65.126.16 AS398891
68.65.126.17 AS398891
68.65.126.18 AS398891
68.65.126.19 AS398891
68.65.126.20 AS398891
68.65.126.21 AS398891
68.65.126.22 AS398891
68.65.126.23 AS398891
68.65.126.24 AS398891
68.65.126.25 AS398891
68.65.126.26 AS398891
68.65.126.27 AS398891
68.65.126.28 AS398891
68.65.126.29 AS398891
68.65.126.30 AS398891
68.65.126.31 AS398891
68.65.126.32 AS398891
68.65.126.33 AS398891
68.65.126.34 AS398891
68.65.126.35 AS398891
68.65.126.36 AS398891
68.65.126.37 AS398891
68.65.126.38 AS398891
68.65.126.39 AS398891
68.65.126.40 AS398891
68.65.126.41 AS398891
68.65.126.42 AS398891
68.65.126.43 AS398891
68.65.126.44 AS398891
68.65.126.45 AS398891
68.65.126.46 AS398891
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68.65.126.49 AS398891
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68.65.126.51 AS398891
68.65.126.52 AS398891
68.65.126.53 AS398891
68.65.126.54 AS398891
68.65.126.55 AS398891
68.65.126.56 AS398891
68.65.126.57 AS398891
68.65.126.58 AS398891
68.65.126.59 AS398891
68.65.126.60 AS398891
68.65.126.61 AS398891
68.65.126.62 AS398891
68.65.126.63 AS398891
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68.65.126.65 AS398891
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68.65.126.91 AS398891
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68.65.126.126 AS398891
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68.65.126.242 AS398891
68.65.126.243 AS398891
149.112.112.9 AS19281
149.112.112.10 AS19281
149.112.112.11 AS19281
149.112.112.12 AS19281
149.112.112.13 AS19281
149.112.112.112 AS19281
149.112.112.254 AS19281
149.112.149.112 AS19281
149.112.149.254 AS19281

Core Networks

Applications are sometimes deployed on partner networks, parent company networks, or regional hosting providers. The following is a sample of Quad9 IP addresses deployed on this type of network.

Network IP
Switch.ch Icon Switch.ch 2001:620:2020:5:9::138
Switch.ch Icon Switch.ch 195.176.255.138

SaaS - Software-as-a-Service

SaaS Sample IP
WoodyNet Icon WoodyNet 216.21.3.104

Quad9 use the third-party SaaS platforms shown here. These services typically manage authentication, advertising, cybersecurity, e-mail services and more.