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DNS Basics

Understand home DNS filtering, device coverage, privacy, and the limits of domain blocking.

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Start with what domain filtering can change and where it has limits. These guides explain the request path before you choose a tool or change a network setting.

For product-specific connection requirements, use the Home DNS Ad Blocker setup guide.

Diagram showing video and advertising requests sharing one delivery domain and the limits of DNS filtering.
DNS Basics2026/10/19
Can DNS Block YouTube Ads? Understand the Limits Before You Buy
DNS filtering cannot reliably remove YouTube video ads. Learn why shared delivery domains matter and what to expect on browsers, phones, and TVs.
Diagram separating visible DNS domain requests from encrypted page content and other tracking methods.
DNS Basics2026/10/19
Can DNS Filtering Stop Tracking? What It Can and Cannot See
See which tracking connections DNS filtering can block, what a DNS lookup reveals, and which browser privacy controls address the gaps it leaves.
Comparison diagram of DNS filtering across devices and browser filtering inside a web page.
DNS Basics2026/10/19
DNS Ad Blocker vs Browser Extension: Do You Need Both?
Compare DNS ad blocking with browser extensions across websites, apps, and TVs, then test both layers without confusing blocked requests with ads removed.
Diagram of a smart television using home DNS filtering with separate app and video-ad paths.
DNS Basics2026/10/19
Can You Block Ads on a Smart TV With DNS?
Check what DNS filtering may change on a smart TV, how to test one set safely, and why home-screen ads, app ads, and video ads need different expectations.
Diagram of a home router directing DNS requests through a filter that allows some domains and blocks others.
DNS Basics2026/10/19
What Is DNS Ad Blocking, and How Does It Work?
Learn how DNS ad blocking filters domain requests, which home devices can use it, and why video ads and empty page spaces can remain after setup.

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