Case Studies
See how organizations solve real-world problems with Control D.
GitHubEasy-to-deploy DNS security GitHub could trust and maintain.
Pennsylvania College of TechnologyVisibility into thousands of unmanaged student devices, without sacrificing privacy.
Good Heart TechnologyHow an MSP protects its non-profit clients from cyber threats.
Guides
The concepts behind DNS security explained properly, from fundamentals to deployment.
What Is DNS Filtering? The Complete GuideHow DNS filtering works, what it blocks, and how to deploy it across your fleet.
Enterprise DNS Security: The Complete GuideProtect enterprise networks at the DNS layer: architecture, zero trust, compliance, and vendor comparison.
Free, no-signup tools to check and improve your DNS setup.
DNS Leak TestSee if your queries are exposed to your ISP.
Dragonfly URL FilteringTest Dragonfly URL-level filtering in the browser.
DNS Speed TestBenchmark resolver response times from your location.
Cost CalculatorEstimate what Control D saves against other DNS vendors.
Documentation & Support
Learn how to set up Control D, track releases, and get help when you need it.
Knowledge BaseSetup, deployment, and API documentation.
Security & Trust CenterSOC 2 and ISO 27001/27701 certifications and compliance docs.
ChangelogSee what's new and recently shipped.
Contact SupportGet help with setup or your account.
Watch & Listen
Demos, walkthroughs, and the Full Metal Packet podcast.
Control D on YouTubeProduct demos and walkthroughs.
Full Metal Packet PodcastReal breach stories and hard lessons from the security leaders who lived them.
Blog
Where we write about DNS, security, and everything Control D.
The Control D BlogRead our latest posts.
