I want to have a regular Expression for Google Analytic so I can match all the domain including the sub domains

say we have to match a domain name called `xyz.com`

So i want to match every url that have `xyz.com` in it.
Example

```
abcd.xyz.com, abc1232.xyz, www.xyz.com, www.xyz.com/abc

```

Can anyone help me with that.

My purpose to it to have the traafic reports excluded in Google Analytics that are coming from these sites.