.NET HTTP POST Method - Cookies AirFrames.org

尝试使用c# POST HttpWebRequest到airframes.org获取飞机信息。这是我用于许多其他POST请求的代码，没有问题(与其他url一起使用)，但它/我无法使用ICAO24号码(A64294)加载airframes.org页面。

        var cookies = new CookieContainer();
        ServicePointManager.Expect100Continue = false;
        var request = (HttpWebRequest)WebRequest.Create("http://www.airframes.org/");
        request.CookieContainer = cookies;
        request.Method = "POST";
        request.KeepAlive = true;
        request.ContentType = "application/x-www-form-urlencoded";
        using (var requestStream = request.GetRequestStream())
        using (var writer = new StreamWriter(requestStream))
        {
            writer.Write("reg=&selcal=&icao24=A64294&submit=submit");
        }
        using (var responseStream = request.GetResponse().GetResponseStream())
        using (var reader = new StreamReader(responseStream))
        {
            var result = reader.ReadToEnd();
            Console.WriteLine(result);
        }