Can DNS cause website to not load or load slowly?

Question

My website is intermittently loading or loading slowly. Can DNS cause this?

Answer

Yes. If your website has a nameserver that is not responding or has two A records and one of them is not hosting your website content, it can cause your site not to load or load very slowly.

One way to check DNS is through a third-party DNS website. While we cannot recommend any particular one, here are a few examples:

intoDNS

whatsmydns.net

Leaf DNS