Get IP address of client machine

Question

I am trying to get the IP address of client machine using C#. I am using the below code to get the IP address :

string IPAddress = HttpContext.Current.Request.UserHostAddress;

But it is giving me the response in encoded format i.e fe80::ed13:dee2:127e:1264%13

How can I get the actual IP address? Any one faced this issue please share some idea.

To me, your example actually looks like a real IP address (although IPv6, not IPv4). — Uwe Keim, Jan 16 '14 at 07:14
Yes it is giving the IPv6 address. Is there any way where we can get the IPv4 address? — Sushri, Jan 16 '14 at 07:21
You can get correct IP Address as mentioned. Try this answer. [Click Here](http://stackoverflow.com/questions/21669186/ipaddress-of-a-login-system/39524251#39524251) — Zia Ul Mustafa, Sep 16 '16 at 05:50
Totally confused by the accepted answer, and the other votes. The question is asking about the _CLIENT_ machine IPv4 address, but all of the answers (except the one from Ramashankar) are getting the server's IPv4 address. — decates, Oct 04 '18 at 11:13

score 16 · Accepted Answer · edited Jan 16 '18 at 22:05

16

C#

string IPAddress = GetIPAddress();

public string GetIPAddress()
{
    IPHostEntry Host = default(IPHostEntry);
    string Hostname = null;
    Hostname = System.Environment.MachineName;
    Host = Dns.GetHostEntry(Hostname);
    foreach (IPAddress IP in Host.AddressList) {
        if (IP.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) {
            IPAddress = Convert.ToString(IP);
        }
    }
    return IPAddress;
}

VB.net

Dim Host As IPHostEntry
Dim Hostname As String
Hostname = My.Computer.Name
Host = Dns.GetHostEntry(Hostname)
For Each IP As IPAddress In Host.AddressList
    If IP.AddressFamily = System.Net.Sockets.AddressFamily.InterNetwork Then
        IPAddress = Convert.ToString(IP)
    End If
    Next
Return IPAddress

Hope this helps

edited Jan 16 '18 at 22:05

leocabrallce

163
1
8

answered Jan 16 '14 at 07:12

Amarnath Balasubramanian

9,300
8
34
62

Thanks for your time Amarnath. But I am facing some issue at this line: Hostname = My.Computer.Name; Is there any other dependencies. – Sushri Jan 16 '14 at 07:33
My.Computer.Name is not recognized. Do we need to add anything else added in code. – Sushri Jan 16 '14 at 09:45
2

@Sushri i have updated my answer Hostname = System.Environment.MachineName; – Amarnath Balasubramanian Jan 16 '14 at 10:00
17

This is returning the server's IP address, not the client's IP address as asked in the question. The OP is trying to pull the IP address from the current `HttpContext`, but you're getting it from the server. This doesn't answer the question (though it may very nicely answer a different one!). – decates Oct 04 '18 at 11:08

score 10 · Answer 2 · answered Jan 16 '14 at 07:09

10

private string GetUserIP()
 {
     return Request.ServerVariables["HTTP_X_FORWARDED_FOR"] ?? Request.ServerVariables["REMOTE_ADDR"];    
 }

You may get several ip address, so can split them as-

private string GetUserIP()
    {
        string ipList = Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

        if (!string.IsNullOrEmpty(ipList))
        {
            return ipList.Split(',')[0];
        }

        return Request.ServerVariables["REMOTE_ADDR"];
    }

answered Jan 16 '14 at 07:09

Ramashankar

1,598
10
14

Keep in mind that the HTTP_X_FORWARDED_FOR header can contain multiple IP's separated by comma. Normally, the correct IP is the last one. This is because of proxies that add their own IP to the "chain". – Pascal Mathys Jan 16 '14 at 07:11
Nice. This seems to be the only answer that actually addresses the question: getting the CLIENT address for the current request (not the server address). – decates Oct 04 '18 at 11:10

score 7 · Answer 3 · answered Jan 16 '14 at 07:14

7

try using this

string ip=System.Net.Dns.GetHostEntry
               (System.Net.Dns.GetHostName()).AddressList.GetValue(0).ToString();

answered Jan 16 '14 at 07:14

The Hungry Dictator

3,444
5
37
53

Thanks Ronit... this code wored for getting the IPv6 address and I modifed it a bit to get the IPv4 address. The code to get the IPv4 address is : string ip=System.Net.Dns.GetHostEntry (System.Net.Dns.GetHostName()).AddressList.GetValue(1).ToString(); – Sushri Jan 16 '14 at 07:44

score 6 · Answer 4 · answered Dec 09 '16 at 13:15

In my project it's required to get the local PC IP. So i use it Please try the below code

string strHostName = System.Net.Dns.GetHostName();
IPHostEntry ipEntry = System.Net.Dns.GetHostEntry(strHostName);
IPAddress[] addr = ipEntry.AddressList;
string ip = addr[1].ToString();

Get IP address of client machine

4 Answers4

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