title: Httprequest.Url.Host giving very odd server address
body: <p>In my Asp.net application I am using <code>Httprequest.Url.Host</code> property for getting the sub-domain, but on some requests value of this property is coming very odd like </p>
  
  <blockquote>
    <p>l7829765.iavs9x.u.avast.com.</p>
  </blockquote>
  
  <p>Is it possible that  <code>Httprequest.Url.Host</code> value can be manipulated somehow?</p>