custom server query returns error

[jameswang2015]

This is exactly what I want but when I try using custom service url https://rdap.markmonitor.com/rdap to respond to domain query for google.com, I get error No RDAP servers responded successfully (tried 1 server(s)). Here is my code:

func CustomUsage() {
	// Advanced usage:
	//
	// This demonstrates custom FetchRoles, a custom Context, a custom HTTP client,
	// a custom Bootstrapper, and a custom timeout.
	//   // Nameserver query on rdap.nic.cz.
	server, _ := url.Parse("https://rdap.markmonitor.com/rdap")
	  req := &rdap.Request{
		Type: rdap.DomainRequest,
		Query: "google.com",
		//FetchRoles: []string{"all"},
		//Timeout: time.Second * 45, // Custom timeout.

		Server: server,
	  }

	//fmt.Println(req.URL())

	  //req = req.WithContext(context.Context) // Custom context (see https://blog.golang.org/context).

	  client := &rdap.Client{}
	  //client.HTTP = &http.Client{} // Custom HTTP client.
	  //client.Bootstrap = &bootstrap.Client{} // Custom bootstapper.

	  resp, err := client.Do(req)
	  if err != nil {
	  	fmt.Println(err.Error())
	  }

	  if ns, ok := resp.Object.(*rdap.Domain); ok {
	   fmt.Printf("Handle=%s Domain=%s\n", ns.Handle, ns.LDHName)
	  }
}

Thanks