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How-to: Custom domain name for GitHub Pages

How-to: Custom domain name for GitHub Pages

I host my personal blog on GitHub pages (datdev2409/my-blog). The default domain name for my website will be datdev2409.github.io/my-blog/. Now I want to create the custom domain name blog.datnguyen2409.tech to point to the GitHub pages

DNS Provider Config

For a subdomain (e.g., blog.datnguyen2409.tech)

Add the CNAME record point to the datdev2409.github.io (replace datdev2409 with your GitHub username)

The CNAME record should point to the hostname. Not the URL

❌ datdev2409.github.io/my-blog

✅ datdev2409.github.io

I use CloudFlare as the DNS provider. The config looks like below

alt text

For an apex domain (root domain e.g., datnguyen2409.tech)

Apex domain do not support CNAME record Create the A records that point to the GitHub Pages IP Addresses

185.199.108.153
185.199.109.153
185.199.110.153
185.199.111.153

GitHub Config

Create the CNAME file with the custom domain name in the root of repository alt text

Go to: Repository -> Settings -> Pages

  • Input your custom domain in Custom Domain section
  • Check Enforce HTTPS to enable HTTPS for website

alt text

References

GitHub Documentation: Managing a custom domain for your GitHub Pages site

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