“speed.cloudflare.com is a tool that allows you to measure the speed and consistency of your connection to the Internet. You can use it to verify that the speed your ISP promised you is the speed you are getting, compare different ISPs or test network connectivity in different parts of your house. The measurements run on the Cloudflare network, which spans data centers in over 300+ cities worldwide. This ensures you are testing against a server that is close to you, which means you are measuring only the speed of your ISP, with minimal networks in between that may impact your score.”