Faster Internet for FREE in 30 seconds - No... Seriously

Linus Tech Tips · 2026-05-22 ·▶ Watch on YouTube ·via captions ·2 min read
TL;DR

Switching your DNS server to Cloudflare's 1.1.1.1 (free, takes under a minute) can noticeably speed up browsing and improve privacy on any device or OS. Unlike raw bandwidth, DNS speed affects how quickly every new page or resource begins loading. ---

Key Concepts

DNS (Domain Name System)
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Translates human-readable domain names (e.g., google.com) into IP addresses so your browser knows where to connect
DNS resolver
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The service that performs that lookup — typically assigned automatically by your ISP
Cached vs. uncached lookups
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Cached = the IP is already stored locally or on the resolver (fast); uncached = the resolver must query registrars worldwide (slower)
Aggressive negative caching
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A technique Cloudflare uses to reduce lookup load by caching "this domain doesn't exist" answers
DNS over TLS / DNS over HTTPS
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Emerging standards that encrypt DNS queries, preventing snooping on which sites you visit
Query minimization
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Revealing only the minimum data necessary to complete a DNS lookup, reducing privacy exposure

Notes

§Why DNS Speed Matters

  • Every domain visit requires a DNS lookup before the page can start loading
  • A slow, overloaded, or unreliable DNS server adds latency to every action online
  • ISP-assigned secondary/tertiary DNS servers are often slower or even non-functional (as demonstrated in testing)

§Cloudflare's 1.1.1.1

  • Launched as a competitor to Google Public DNS and OpenDNS
  • Marketed as "the internet's fastest, privacy-first consumer DNS service"
  • Ranked first or near-first across all regions by third-party site [dns perf](https://www.dnsperf.com)
  • Backup address: 1.0.0.1

§How Cloudflare Achieves Speed

  • Pre-fills distributed cache with popular domain-IP pairs ("out of band")
  • Expanding global network — 31 new data centers added in a single month
  • Goal: every user within 10ms of at least one Cloudflare location
  • Uses aggressive negative caching to reduce resolver load

§Benchmark Results (GRC DNS Benchmark Tool)

  • Cached lookups: Local ISP DNS was slightly faster (physically closer)
  • Uncached lookups & .com lookups: Cloudflare came out ahead
  • ISP secondary DNS was completely dead, making fallback slower — Cloudflare avoids this failure mode
  • Subjective experience: noticeably snappier tab opens and YouTube load times

§What DNS Speed Does *Not* Affect

  • Video playback quality / resolution — that is still limited by your connection's bandwidth

§Privacy Benefits

  • Even on HTTPS sites, your DNS resolver knows every domain you visit
  • By default, your ISP, mobile carrier, and every Wi-Fi network you've used logs this data
  • Cloudflare's privacy commitments:
  • Logs IP addresses only temporarily (abuse prevention / debugging)
  • Contractually committed with KPMG (third-party auditor) to wipe all logs within 24 hours
  • Never writes your IP address to disk
  • Supports DNS over TLS and DNS over HTTPS

§Real-World Stakes for DNS Privacy

  • In 2014, Turkey's government ordered ISPs to block Twitter via DNS censorship following a corruption scandal
  • Protesters spray-painted Google's DNS IP address on walls in Istanbul as a workaround
  • Open, private DNS is a meaningful tool for internet freedom

§How to Switch

  • Cloudflare provides step-by-step instructions for all platforms at their website
  • Change DNS from "automatic" to:
  • Primary: 1.1.1.1
  • Secondary: 1.0.0.1
  • Recommended for multi-device households: configure DNS at the router level to avoid changing each device individually

Actionable Takeaways

  1. Go to your network settings (PC/Mac/Linux/phone) and set DNS to 1.1.1.1 (primary) and 1.0.0.1 (backup)
  2. If you have multiple devices, change DNS on your router instead of each device individually
  3. Use [GRC's DNS Benchmark tool](https://www.grc.com/dns/benchmark.htm) to verify whether Cloudflare or another resolver is fastest for your specific location
  4. Check Cloudflare's setup guides at their website for platform-specific instructions

Quotes Worth Keeping

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Even if you're visiting an HTTPS website, the fact that you searched for that site in the first place is still known by your DNS resolver.

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Protesters spray-painted the IP of Google's DNS resolver all over Istanbul to help their fellow Turks get back online.