Stop Sonos Wifi Across Network

Program.cs

using System;
using System.Linq;
using System.Net.Http;
using System.Threading.Tasks;

namespace SonosStopper
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var baseUrl = args[0].Trim();
            Console.WriteLine($"Using the {baseUrl.Trim()}.{0} network.");
            using (var client = new HttpClient())
            {
                client.Timeout = TimeSpan.FromSeconds(15);
                var results = Enumerable.Range(0, 255).AsParallel().Select(async entry =>
                {
                    try
                    {
                        var url = $"http://{baseUrl}.{entry}";
                        var uri1 = new Uri($"{url}:1400/wifictrl?wifi=off)");
                        var uri2 = new Uri($"{url}:1400/wifictrl?wifi=persist-off");
                        using (var request = await client.GetAsync(uri1))
                        {
                            if (request.IsSuccessStatusCode)
                            {
                                Console.WriteLine($"Successfully sent wifi off signal to {url}");
                            }
                            else
                            {
                                Console.WriteLine($"Unable to turn off wifi at {url}");
                            }
                        }
                        using (var request = await client.GetAsync(uri2))
                        {
                            if (request.IsSuccessStatusCode)
                            {
                                Console.WriteLine($"Successfully sent permenant wifi off signal to {url}");
                            }
                            else
                            {
                                Console.WriteLine($"Unable to turn off wifi permanently at {url}");
                            }
                        }
                    }
                    catch(Exception ex)
                    {
                        Console.WriteLine($"Error encountered while trying to communicate with {baseUrl}.{entry}.");
                    }
                }).ToList();
                await Task.WhenAll(results);
            }
        }
    }
}