Please save the following code into an aspx page. Then run it on your server and tell me the result.
<%@ Page Language="C#" %>
<script runat="server">
void Page_Load(object sender, System.EventArgs e)
{
Literal1.Text = HttpContext.Current.Request.Url.Host.ToLower() + "<br><br>" + HttpContext.Current.Request.ServerVariables["LOCAL_ADDR"];
}
</script>
<html>
<head>
</head>
<body>
<form runat="server">
<asp:Literal ID="Literal1" Runat="server" />
</form>
</body>
</html>
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