What short domains do you ping to check a network connection?
I usually use x.org. What else is popular and reliable?
8.8.8.8 - google's dns. More reliable, lower ping loss than cloudflare's 1.1.1.1 in my experience.
Cloudflare, that is 1.1.1.1 or one.one.one.one if DNS lookup is needed.
google.com because I don’t like to send traffic like that to smaller websites.