diff --git a/3-Domain/src/main/java/link/OnlineCheck.java b/3-Domain/src/main/java/link/OnlineCheck.java
index b67e446..516636f 100644
--- a/3-Domain/src/main/java/link/OnlineCheck.java
+++ b/3-Domain/src/main/java/link/OnlineCheck.java
@@ -1,7 +1,10 @@
 package link;
 
+import exeptions.URLIsNotReachable;
+
 import java.io.IOException;
 import java.net.HttpURLConnection;
+import java.net.UnknownHostException;
 
 public class OnlineCheck {
 
@@ -18,8 +21,11 @@ public class OnlineCheck {
 
 			return http.getResponseCode();
 		}
+		catch (UnknownHostException unknownHostException){
+			throw new URLIsNotReachable("The host of the url " + url + " could not be resolved.");
+		}
 		catch (IOException e) {
-			return 500; //TODO: seems smelly
+			throw new URLIsNotReachable("Something went wrong when trying to check if the url " + url + " is reachable. Make sure your internet connection is working: " + e.getMessage());
 		}
 	}
 }