Getting The Ip Address of Server in Asp.Net

Getting the IP address of server in ASP.NET?

This should work:

 //this gets the ip address of the server pc

  public string GetIPAddress()
  {
     IPHostEntry ipHostInfo = Dns.GetHostEntry(Dns.GetHostName()); // `Dns.Resolve()` method is deprecated.
     IPAddress ipAddress = ipHostInfo.AddressList[0];

     return ipAddress.ToString();
  }

http://wec-library.blogspot.com/2008/03/gets-ip-address-of-server-pc-using-c.html

OR

 //while this gets the ip address of the visitor making the call
  HttpContext.Current.Request.UserHostAddress;

http://www.geekpedia.com/KB32_How-do-I-get-the-visitors-IP-address.html

How to get the server IP Address (in C# / asp.net)?

Request.ServerVariables["LOCAL_ADDR"];

From the docs:

Returns the server address on which the request came in. This is important on computers where there can be multiple IP addresses bound to the computer, and you want to find out which address the request used.

This is distinct from the Remote addresses which relate to the client machine.

How to get a user's client IP address in ASP.NET?

As others have said you can't do what you are asking. If you describe the problem you are trying to solve maybe someone can help?

E.g.

• are you trying to uniquely identify your users?
• Could you use a cookie, or the session ID perhaps instead of the IP address?

Edit The address you see on the server shouldn't be the ISP's address, as you say that would be a huge range. The address for a home user on broadband will be the address at their router, so every device inside the house will appear on the outside to be the same, but the router uses NAT to ensure that traffic is routed to each device correctly. For users accessing from an office environment the address may well be the same for all users. Sites that use IP address for ID run the risk of getting it very wrong - the examples you give are good ones and they often fail. For example my office is in the UK, the breakout point (where I "appear" to be on the internet) is in another country where our main IT facility is, so from my office my IP address appears to be not in the UK. For this reason I can't access UK only web content, such as the BBC iPlayer). At any given time there would be hundreds, or even thousands, of people at my company who appear to be accessing the web from the same IP address.

When you are writing server code you can never be sure what the IP address you see is referring to. Some users like it this way. Some people deliberately use a proxy or VPN to further confound you.

When you say your machine address is different to the IP address shown on StackOverflow, how are you finding out your machine address? If you are just looking locally using ipconfig or something like that I would expect it to be different for the reasons I outlined above. If you want to double check what the outside world thinks have a look at whatismyipaddress.com/.

This Wikipedia link on NAT will provide you some background on this.

How do I get the server/website IP address in asp.net?

Thanks Alex, your answer put me on the right path. Here is the code to do what I am looking for:

VB.NET:

System.Net.Dns.GetHostAddresses(Request.Url.Host)(0).ToString()

or

System.Net.Dns.GetHostEntry(Request.Url.Host).AddressList(0).ToString()

Get Server Machine IP

try this:

string hostName = System.Net.Dns.GetHostName();
string ipAddress = System.Net.Dns.GetHostEntry(hostName).AddressList[index].ToString();

index is the index of network connection at your server.

How do I get client IP address in ASP.NET Core?

The API has been updated. Not sure when it changed but according to Damien Edwards in late December, you can now do this:

var remoteIpAddress = request.HttpContext.Connection.RemoteIpAddress;

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