My domain doesn't load on wwww but does at the root level

[Choon Hui]

Hi people, 

I have a problem with my DNS/CNAME configuration, I'm trying to setup a custom domain for GitHub Pages.

I did everything as stated in EVERY guide about it, but I can only load my website at domain.com and not at www.domain.com

I'm I missing something?

Thanks! Choon

Ref. https://medium.com/@connorleech/launch-a-website-with-a-custom-url-using-github-pages-and-google-domains-3dd8d90cc33b

[Tom Limoncelli]

Are you using the dnscontrol open source project? This sounds like a
problem with your domain configuration.

If you have a CNAME on domain.com, you can't have an other DNS
records. This is how DNS was designed.

Tom