The case

The case is as follows: I bought a domain. From this domain I configured an access to my website hosted on GitHub Pages. I want to serve other static page hosted on GitHub Pages and I want to have an access to this site through the custom subdomain based on my main domain. Configuration have to support enforcing HTTPS connections.

Solution

I have to configure CNAME file in repo like it was presented in documentation. Then I have to add new CNAME DNS record for my subdomain. Target in CNAME record have to point to (your-github-username).github.io, so in my case:

Then I was able to access to my new website by subdomain based on my main domain and enforce HTTPS connection to my new website.

Helpful sources

• Set Up SSL on Github Pages With Custom Domains for Free

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