Got an asp.net web page in c#. One thing we would like to do

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Asked: June 18, 20262026-06-18T18:06:04+00:00 2026-06-18T18:06:04+00:00

Got an asp.net web page in c#. One thing we would like to do

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Got an asp.net web page in c#. One thing we would like to do is track hits to the site including their IP address. I implemented some code (thanks to SO) but the logged IP address always seem to be local, ie: 192.168.x.x. I have tried it from a variety of devices, even my phone and Version MiFi just to make sure its not something weird with the ISP but the log always list the same 2-3 different internal ip addresses (seems to change a little as the day goes on).

Here is my function that gets the IP (again thanks to postings here on SO):

protected IPAddress GetIp(HttpRequest request)
{
    string ipString;
    if (string.IsNullOrEmpty(request.ServerVariables["HTTP_X_FORWARDED_FOR"]))
        ipString = request.ServerVariables["REMOTE_ADDR"];
    else
        ipString = request.ServerVariables["HTTP_X_FORWARDED_FOR"].Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).FirstOrDefault();

    IPAddress result;
    if (!IPAddress.TryParse(ipString, out result))
        result = IPAddress.None;

    return result;
}

public void logHit()
{
    IPAddress ip = GetIp(Request);
    string sIP = ip.ToString();
}

I tried this as well which yields the same result:

HttpContext.Current.Request.UserHostAddress;

When I do a call on the client side using something like the service on appspot, it works just fine:

<script type="application/javascript">
    function getip(json) {
        //txtIP is a input box on the form
        document.getElementById("txtIP").value = json.ip;
    }
</script>

<script type="application/javascript" src="http://jsonip.appspot.com/?callback=getip"></script>

I suppose I could do a round-about way by hitting that appspot link and parse it out but that seems like a whole lot of trouble for something that should be simple.

Could it be the IIS on the server? Some kind of redirect going on? The ip addresses logged are NOT the servers. The problem is I dont have direct access to it so I have to talk to the guys that admin it and would like to give them some direction before they just start changing things.

Thanks

Ernie