# Custom domain name

Let's say you own the domain name: `yourdomain.com`.

* If you want poeple to hit your landing page when they query `https://yourdomain.com` or `https://www.yourdomain.com` ,follow the instruction of the `Apex domain` tab.
* if you want people to hit your landing page when they query `https://asubdomain.yourdomain.com,` follow the instructions of the `Subdomain` tab.

{% tabs %}
{% tab title="Apex domain" %}
Create theses DNS records (don't forget to replace `yourUsername` by your GitHub username and `yourdomain.com` by your domain):  

```
www.yourdomain.com. CNAME yourUsername.github.io
yourdomain.com.     ALIAS yourUsername.github.io
```

If, and only if, your DNS service provider do not support `ALIAS` records:

```diff
 www.yourdomain.com. CNAME yourUsername.github.io
-yourdomain.com.     ALIAS yourUsername.github.com
+yourdomain.com.    A     185.199.108.153
+yourdomain.com.    A     185.199.109.153
+yourdomain.com.    A     185.199.110.153
+yourdomain.com.    A     185.199.111.153
```

Once your DNS records are available, update your `package.json` `homepage` field:

```diff
-"homepage": "https://yourUsername.github.io/yourRepoName",
+"homepage": "https://www.yourdomain.com",
```

[This line](https://github.com/thieryw/gitlanding/blob/8628d6bc47ba368b08903725e99e40c4eb640203/public/deploy.yaml#L17) of your CI workflow will make sure GitHub Pages understands the change.
{% endtab %}

{% tab title="Subdomain" %}
Create theses DNS records (don't forget to replace `yourUsername` by your GitHub username and `yourdomain.com` by your domain):  

```
asubdomain.yourdomain.com. CNAME yourUsername.github.io
```

Once your DNS records are available, update your `package.json` `homepage` field:

```diff
-"homepage": "https://yourUsername.github.io/yourRepoName",
+"homepage": "https://asubdomain.yourdomain.com",
```

[This line](https://github.com/thieryw/gitlanding/blob/8628d6bc47ba368b08903725e99e40c4eb640203/public/deploy.yaml#L17) of your CI workflow will make sure GitHub Pages understands the change.
{% endtab %}
{% endtabs %}

Commit and push your changes and your are good to go.

{% hint style="success" %}
You do not need to go to the GitHub Pages config and fill in your custom domain, it will be read from the CNAME file.
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.gitlanding.dev/using-a-custom-domain-name.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.