How to check the port number of a web api deployed in IIS?

Hello, guys

I created and deployed a sample web api services into IIS on remote server according this tutorial http://www.asp.net/web-api/overview/creating-web-apis/creating-a-web-api-that-supports-crud-operations

After deployed completely, I want to write a client to call this api accrording http://www.asp.net/web-api/overview/web-api-clients/calling-a-web-api-from-a-net-client

In code snap, I don't know how to know the port number

namespace ProductStoreClient
{
    using System;
    using System.Collections.Generic;
    using System.Net.Http;
    using System.Net.Http.Headers;

    class Program
    {
        static void Main(string[] args)
        {
            HttpClient client = new HttpClient();
            client.BaseAddress = new Uri("http://localhost:9000/"); //How to know "9000" in my environment?

            // Add an Accept header for JSON format.
            client.DefaultRequestHeaders.Accept.Add(
                new MediaTypeWithQualityHeaderValue("application/json"));
        }
    }
}

Because I deployed API to a remote server than local host machine, I modified "http://localhost:xxxx" to "http://server01:xxxx". How to know the "xxxx"?

Thanks.