Getting Information About Public users IP Location

Imports System.IO
Imports System.Net
Imports System.String


 Dim strClientIP As String
        strClientIP = Request.UserHostAddress()

        Dim strComputerName As String
        Dim host As System.Net.IPHostEntry
        host = System.Net.Dns.GetHostEntry(Request.ServerVariables.Item("REMOTE_HOST"))
        strComputerName = host.HostName

        Dim ExternalIP As String
        ExternalIP = (New WebClient()).DownloadString("http://checkip.dyndns.org/")
        ExternalIP = (New Regex("\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}")) _
                     .Matches(ExternalIP)(0).ToString()

        Dim FILENAME As String = Server.MapPath("IP.txt")
        Dim objStreamWriter As StreamWriter
        objStreamWriter = File.AppendText(FILENAME)
        objStreamWriter.WriteLine("External IP    :" & " " & ExternalIP)
        objStreamWriter.WriteLine("Computer Name  :" & " " & strComputerName)
        objStreamWriter.WriteLine("Local IP       :" & " " & strClientIP)
        objStreamWriter.WriteLine("Date & Time    :" & " " & DateTime.Now)
        objStreamWriter.WriteLine("-----------------------------------------------------")
        objStreamWriter.Close()
        Dim objStreamReader As StreamReader
        objStreamReader = File.OpenText(FILENAME)
        Dim contents As String = objStreamReader.ReadToEnd()
        objStreamReader.Close()