October 5, 2026
What your router's default DNS isn't telling you
Most routers ship pointed at your ISP's DNS by default, and that default comes with zero privacy. Here's what's actually visible on the wire, and what encrypted DNS changes.
Koru Shield
Blog
Plain-English explainers on DNS filtering, privacy, and why we're building Koru Shield the way we are. No jargon, no fear tactics.
October 4, 2026
How to block YouTube ads on iPhone: what actually works
YouTube serves its ads from the same servers as the videos, so no DNS filter can block in-stream ads. Here's an honest breakdown of what DNS filtering can and can't do, and what's worth doing.
October 4, 2026
Best DNS for gaming: what actually matters
DNS won't lower your in-game ping, but it affects how fast games connect and download. Here's what to look for, and how to set it up on PS5, Xbox, Switch, and PC.
October 4, 2026
How to set up DNS filtering on iPhone
Your iPhone makes thousands of DNS lookups a day, on Wi-Fi and on cellular, inside Safari and inside every app. Here's how to filter all of them in about a minute with an encrypted DNS profile.
October 4, 2026
Block ads at the DNS level
Browser ad blockers only protect the browser they're installed in. Blocking ads at the DNS level covers every app on your device, uses less battery, and can't be detected by anti-adblock scripts.
October 4, 2026
Why we built Koru Shield
Existing DNS filters are either too technical for most families or too locked-down to live with. We wanted something in between, and that's the whole reason this product exists.
October 3, 2026
How DNS filtering actually protects your family
DNS filtering stops dangerous sites before your browser ever connects to them. Here's what DNS is, how the blocking actually works, and why it catches more than a browser extension ever could.