Get you domain name from URL

It can be achieved by two methods, getting the domain hosted name using URL request Request.Url.Host and another by Uri. 

var url = "http://www.aljazeera.com/news/2016/07/dallas-police-suspect-affiliated-group-160708132417429.html";
            Uri myUri = new Uri(url);
            string host = myUri.Host;

 Output:

www.aljazeera.com