Quad9

DNS service

Fact-Checks

10 results

Dec 9, 2025

What DNS providers does DuckDuckGo route encrypted queries through and where are they located?

DuckDuckGo’s VPN and apps are configured to send DNS queries to “DuckDuckGo DNS servers” while connected to its VPN; DuckDuckGo says those DNS queries protect traffic from being logged by an ISP or th...

Nov 18, 2025

What are the data retention policies for ISPs regarding DNS logs, IP connections, and packet metadata across major providers?

Major ISPs and DNS providers follow a patchwork of practices: some jurisdictions (e.g., EU, Australia) have mandatory retention laws requiring ISPs to store connection metadata for fixed periods, whil...

Nov 19, 2025

How long do major ISPs retain DNS query logs in the United States and Europe as of 2025?

Major public DNS operators commonly state short technical retention windows — e.g., Google’s public DNS logs IP-related metadata for about 24–48 hours and Cloudflare’s public statements put retention ...

Jan 20, 2026

What retention periods do major U.S. ISPs publicly disclose for IP logs, DNS and browsing metadata?

Major U.S. ISPs do not publish a single uniform retention policy; publicly disclosed figures cluster between roughly 6 months and 18 months for IP-assignment logs, while DNS query and “browsing” recor...

Nov 21, 2025

How can consumers request deletion or access to their ISP-stored DNS and connection logs?

Consumers who want access to or deletion of ISP-held DNS and connection logs face a fragmented reality: ISPs commonly log DNS queries and connection metadata for operational and security reasons, but ...

Dec 14, 2025

How can I verify which DNS resolver my device or browser is actually using for encrypted queries?

You can check which resolver your device or browser uses by running active tests from the client that force a lookup and report which recursive resolver answered — tools exist that do this from your b...

Nov 15, 2025

Best practices for secure DNS in anonymous browsing

Encrypted DNS protocols like DNS-over-HTTPS (DoH) and DNS-over-TLS (DoT) prevent on-path observers from reading or tampering with DNS queries, but they do not by themselves stop resolvers from associa...

Jan 9, 2026

Which public DNS resolvers (Cloudflare, Google, OpenDNS, Quad9, etc.) return different results for duckduckgo.com and why?

Different public DNS resolvers — Cloudflare (1.1.1.1), Google (8.8.8.8), OpenDNS (208.67.222.222) and Quad9 (9.9.9.9) — usually resolve duckduckgo.com to the same set of authoritative IP addresses, bu...

Jan 2, 2026

Which DNS providers have undergone independent audits or transparency reports for their no-logs claims?

A handful of public DNS services have subjected their privacy promises to external scrutiny: Cloudflare explicitly commissions annual KPMG audits and publishes reports about its “no-logging” handling ...