Privacy
Your ISP Has Been Selling Your Data — The Proof
Every major US ISP can legally sell your browsing history and location data. We filed FOIA requests and got the receipts.
Blog
DCSPEEDTEST BLOG
Internet guides, hardware reviews, latency optimization, and speedrun tips for the modern web.
Education
Speed Tests Are Lying to You: Get Your Real Speed
ISPs optimize networks specifically to boost numbers on popular test sites. Here's the 4-step protocol to see your real speed.
Troubleshooting
Zoom Keeps Freezing? Fix It Without Upgrades
500 Mbps and flawless speed tests, but calls still freeze? We analyzed 40,000 bad Zoom calls and found the real culprit: jitter.
Research
Internet Prices and Speeds: How to Compare Broadband Plans
Compare broadband prices fairly using total fees, typical speeds, data limits and a repeatable home speed test. Includes FCC and OECD resources.
Troubleshooting
Car Speed Test: How to Test and Boost Your In-Vehicle Wi-Fi
A first-person look at in-car cellular hotspots, Tesla connectivity, and OBD-II routers — and how to boost your signal.
Guides
OVH Speed Test: Test VPS Bandwidth with wget and iperf3
Check bandwidth to OVHcloud data centers using download files, wget, curl and iperf3. Learn how server location and network routing affect results.
Guides
Train Speed Test: Why Wi-Fi on Trains Is Always Terrible
Why WiFi on trains is always terrible — cellular handover delays, packet drops, and the metal Faraday cage effect explained.
Guides
How to Test Internet Speed With Repeatable Conditions
Choose a consistent device, connection and test mode. Record the conditions and repeat before treating a change as meaningful.
Troubleshooting
DNS Speed Test: How to Pick the Fastest DNS Server
A hands-on technical audit of DNS speeds comparing Cloudflare, Google, Quad9, and local ISP resolvers, with tools and steps to lower your web lookup latency.