Ookla: servers INSIDE ISP networks. ISPs prioritize their own server traffic → inflated results.
Fast.com: Netflix CDN only → Netflix-optimized path.
Cloudflare: independent CDN. Not an ISP. No payments from ISPs for hosting. Zero bias.
Ookla, Fast.com and Google do not measure these.
Under 20ms — excellent (1.1.1.1, 8.8.8.8)
50-150ms — slow. Browsing feels sluggish even on gigabit.
Over 150ms — very slow. Switch DNS now.
DCSpeedTest uses Cloudflare's infrastructure.
Same neutral network → same zero ISP bias.
Better interface than speed.cloudflare.com.
DCSpeedTest = Cloudflare measurement with consumer-friendly UX.
Same neutral Cloudflare infrastructure. Better interface. Download + Upload + Ping + Jitter in 15 seconds.