diff --git a/SubnetScanner/IsHostAlive.cs b/SubnetScanner/IsHostAlive.cs
new file mode 100644
index 0000000..333799d
--- /dev/null
+++ b/SubnetScanner/IsHostAlive.cs
@@ -0,0 +1,43 @@
+using System.Net.NetworkInformation;
+
+namespace IP_port_checker.SubnetScanner
+{
+    public class IsHostAlive
+    {
+        private static bool HostAliveCheck(string ip)
+        {
+            try
+            {
+                using (Ping ping = new Ping())
+                {
+                    PingReply pingReply = ping.Send(ip, 1000);
+                    return pingReply.Status == IPStatus.Success;
+                }
+            }
+            catch
+            {
+                return false;
+            }
+        }
+        public static void ParralelScan(string network)
+        {
+            var tasks = new List<Task>();
+            int alive = 0;
+
+            for (int i = 0; i < 254; i++)
+            {
+                string ip = $"{network}.{i}";
+                tasks.Add(Task.Run(() =>
+                {
+                    if (HostAliveCheck(ip))
+                    {
+                        Console.WriteLine($"Хост {ip} - в сети");
+                        alive++;
+                    }
+                }));
+            }
+            Task.WaitAll(tasks.ToArray());
+            Console.WriteLine($"Устройств в сети: {alive}");
+        }
+    }
+}