@VincentLogic: A programmer had a wild idea: DNS resolvers cache domain names for a few days—so can we use them to store files? ↓ He found 3.9 million open DNS resolvers across the internet, chopped files into pieces, and scattered them across the web. No hard drive, no database, no cloud. The files live in the caches of countless servers, and those servers have no idea they're storing anything…

X AI KOLs Timeline Tools

Summary

A programmer used the caches of 3.9 million open DNS resolvers to store file fragments, creating an absurd open-source project called dnsfs. The files disappear as the caches expire.

A programmer had a wild idea: DNS resolvers cache domain names for a few days — So can we use them to store files? ↓ He found 3.9 million open DNS resolvers across the internet Chopped files into pieces Scattered them across the internet No hard drive, no database, no cloud Files live in the caches of countless servers, and those servers have no idea they're storing anything What if no one visits? The files slowly "die" as each server forgets them This is one of the most absurd open-source projects I've ever seen The project is called dnsfs What file would you store in a DNS cache?
Original Article
View Cached Full Text

Cached at: 06/08/26, 05:19 AM

A programmer had a wild idea:

DNS resolvers cache domain names for days——

What if you could store files in them?

↓

He found 3.9 million open DNS resolvers across the entire internet

Chopped the file into pieces

Scattered them across the web

No hard drive, no database, no cloud

The file lives in the caches of countless servers — servers that have no idea they’re storing anything

What if nobody visits it?

The file slowly “dies” as servers one by one forget it

This is one of the most absurd open source projects I’ve ever seen

It’s called dnsfs

What file would you store in a DNS cache?

Similar Articles

@ruyi3699: Just came across an open-source tool called Numa — a single-file DNS resolver written in Rust, only 8MB in size. After installing it, you can: ① Block over 380,000 ads — no matter where your domain queries go, everything stays quiet ② Auto-provision HTTPS certificates for local custom domains, so your browser shows a green lock right away ③ Built-in storage with zero cloud dependency — all data stays loca…

X AI KOLs Timeline

Numa is an open-source DNS resolver written in Rust, packaged as a single ~8MB file. It supports ad blocking, automatic HTTPS certificates for local custom domains, ODoH/DNSSEC encryption, and local-only storage — no cloud required — and can be deployed with a single command on macOS, Linux, and Windows.

@VincentLogic: Who knew! I finally found a truly free domain! DigitalPlat FreeDomain, an open-source gem with 161k stars—a real, permanent free domain. Not the kind that's free the first year and then hooks you. No registration fees, no renewals, no hidden costs. An open-source public service project run by the DigitalPlat Foundation.

X AI KOLs Timeline

Introducing DigitalPlat FreeDomain, an open-source project offering truly permanent free domain registration and custom DNS resolution. Operated by a non-profit foundation, it's ideal for personal websites and project testing.

@axichuhai: Guys! Found a permanently free domain project that has earned 162K Stars on GitHub, absolutely legendary. It's an open-source public welfare project: free registration, free renewal, no hidden fees, no watermark ads. Available for individuals, organizations, and commercial projects. Supports Cloudflare, FreeDNS, and more...

X AI KOLs Timeline

Recommending a permanently free domain open-source project with 162K Stars on GitHub. Completely free registration and renewal, no hidden fees, supports Cloudflare and other DNS providers. Suitable for individuals, organizations, and commercial projects.

The DNS Museum

Hacker News Top

The DNS Museum 是一个收录各种奇特、富有创意但不实用的 DNS 玩法的参考网站,包含 49 个条目,涵盖利用 PTR 记录绘制 traceroute 图案、DNS over 各类奇异协议、DNS 隧道以及各种工具与玩具。