# Custom Domain

## Overview

For Redirect and Direct Response users, the usual domain name encoded onto the tags is the ixkio tag management URL : `https://t.ixkio.com.` 

However, on all our Flex Direct and Flex Redirect plans, you can also use your own domain and map this to ours. 

{% hint style="danger" %}
You can only have one domain associated with your account and changing this may cause existing tags to stop working. We very strongly recommend you choose a domain and subdomain that you are good to use in the long term. 
{% endhint %}

You need to create a CNAME on your domain, for example 'auth.yourdomain.com' or 'tap.yourdomain.com' which maps/points to <https://t.ixkio.com>. You can do this through the company that hosts your company domain.&#x20;

We recommend speaking to your domain holding/hosting company if you need advice on setting this up.&#x20;

Once the CNAME has been set, contact us via email at <mail@ixkio.com> for us to configure this on your Account.&#x20;

Ixkio will create an SSL certificate for you free of charge for your domain on our platform.&#x20;

{% hint style="info" %}
It can take 48-72 hours for a CNAME change to be fully active across the internet.&#x20;
{% endhint %}

## Using a Custom Domain with API

You cannot currently use a Custom Domain for accessing either the Response API or the Management API.&#x20;

In both these cases, your end user would not be aware of the ixkio domain in any event so it's highly unlikely that API Mode users would need or require a Custom Domain. &#x20;


---

# 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.ixkio.com/advanced-features/custom-domain.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.