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IPv4
9.9.9.9
149.112.112.112
IPv6
2620:fe::fe
2620:fe::9
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Frequently Asked Questions
General Questions
Does my computer use DNS?
Is Quad9 free to use?
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Reliability & Maintenance
How long has the DNS service been in production?
If maintenance needs to happen on your DNS, how is that coordinated and how much lead time is given to the end users?
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Security
How does Quad9 prevent blocking legitimate domains?
What will I see if a domain is blocked by Quad9?
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Privacy & Data Protection
Does Quad9 collect and store personal data?
Does Quad9 offer content filtering?
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Sponsorship & Partnership
How do we become an Appliance Manufacturer partner?
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