VB get external IP address

Private Function GetExternalIp() As String
    Try
        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()
        Return ExternalIP
    Catch
        Return Nothing
    End Try
End Function

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