所以，我在localhost上做我的项目，一切都运行得很顺利。我可以向服务器发出请求，并从我的安卓系统得到响应。没问题。然后我从AWS得到了一个ec2，没有Map到任何域名。所以，当我使用curl或postman发出请求时，它工作得很好。一切都工作得很好。但我试图从我的Retrofit发出请求时，它说的是同一个URL

HTTP FAILED: java.net.UnknownHostException: Unable to resolve host "ec2-11-130-81-251.ap-south-1.compute.amazonaws.comapi": No address associated with hostname

我还确保我已经在我的手机和一切互联网许可。那么，它是一个必须有一个域名时，使网络请求从一个android手机？有没有办法绕过这样的事情？
这是我的改进的单例类，如果它有用的话。谢谢

public class ApiClient {

//    public static final String BASE_LOCAL_URL = "http://192.168.1.4:3000/";
//    public static final String BASE_LOCAL_EMULATOR_URL = "http://10.0.2.2:3000/";
        public static final String SERVIER_LOGIN="ec2-11-130-81-251.ap-south-1.compute.amazonaws.comapi";
    public static final String BASE_URL = SERVIER_LOGIN;

    private static Retrofit retrofit = null;

    private ApiClient() {

        if (retrofit != null) {
            throw new RuntimeException("Use getInstance() method to get the single instance of this class.");
        }
    }

    public static synchronized Retrofit getClient(Context context) {

        if (retrofit == null) {
            HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
            interceptor.level(HttpLoggingInterceptor.Level.BODY);

            AuthInterceptor authInterceptor = new AuthInterceptor(context);
            OkHttpClient client = new OkHttpClient.Builder().
                    addInterceptor(authInterceptor).
                    readTimeout(60, TimeUnit.SECONDS)
                    .writeTimeout(60, TimeUnit.SECONDS)
                    .connectTimeout(60, TimeUnit.SECONDS)
                    .addInterceptor(interceptor)
                    .build();

            retrofit = new Retrofit.Builder()
                    .baseUrl(BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create(getGson()))
                    .client(client)
                    .build();

            return retrofit;
        }

        return retrofit;
    }

    private static Gson getGson() {

        return new GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS").create();
    }
}