Unable to get some client computer name visiting my intranet

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Hi,
i am unable to get some client computer name not all visiting my intranet site.any one can help me on this please.
thanks

What I have tried:

C#

public string GetComputerName(string clientIP)
{
    try
    {
        var hostEntry = Dns.GetHostEntry(clientIP);
        return hostEntry.HostName;
    }
    catch (Exception ex)
    {
        return string.Empty;
    }
}

//call GetComputerName function

string computerName=GetComputerName(HttpContext.Current.Request.UserHostAddress)

Posted 5-Dec-17 18:51pm

Merajuddin Ansari

Updated 7-Dec-17 2:24am

User 4180254

v2

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Merajuddin Ansari 6-Dec-17 3:05am

error: The requested name is valid, but no data of the requested type was found

1 solution

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Jochen Arndt · Answer 1 · 2017-12-07T02:24:00

It is not a problem of your application. Possible reasons are that there is no DNS server for the network to which the IP belongs, there is a DNS server but that has no record for that IP, or the IP belongs to a different local subnet than the local subnet of your system.

You can check it on the command line with the nslookup utility:

nslookup ip-address

If that fails too, you can't do anything in your application besides catching this error and returning for example the IP address instead (catching errors is always a good idea; especially with operations that may fail for various reasons like network).

If there is a local DNS server but it does not have a record for that IP, you might also ask the administrator of that server.