The background story: recently I switched to use cloudflare as the name-server of my domain(which use namecheap as registrar). I noticed a increase in ping time. Then, I moved another domain(with godaddy as registrar) to Cloudflare and I actually see improvement.
The difference between the two is non trivial (200ms vs 3ms). The machine behind the two domain is in the same datacenter. It makes me wonder is it because the difference in registrar.
Do domain registrar affect the ping time of your domain? If so or otherwise, How can I optimize?