Linkedin 999 Request denied

I don't know if somebody has been able to solve this. In a AWS server, we are running our application. We extract the content of articles published in web pages. It is ok for nearly everything, but Linkedin pulse articles returned 999 Request Denied.

I know that Linkedin has blacklisted AWS ip's, and also I am specifying which User Agent to use.

But there is a way to avoid that or any end point api to query for pulse articles?

This is my code so far

var httpWebRquest = (HttpWebRequest)WebRequest.Create(new Uri("http://ift.tt/1fDEzAF"));
httpWebRquest.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.134 Safari/537.36";
var httpWebResponse = (HttpWebResponse)httpWebRquest.GetResponse();
...

and GetResponse throws

The remote server returned an error: (999) Request denied