diff --git a/test_testping1.py b/test_testping1.py
index cc3f6a8..93bfd3b 100644
--- a/test_testping1.py
+++ b/test_testping1.py
@@ -95,7 +95,7 @@ def test_is_reachable_calls_ping_correctly(self, mock_call):
         is_reachable('192.168.1.1', timeout=5)
         # Verify that subprocess.call was called with the correct arguments, including the timeout
         mock_call.assert_called_once_with(
-            ['ping', '-c', '1', '-W', '5', '192.168.1.1'],
+            ['ping', '-n', '-c', '1', '-W', '5', '192.168.1.1'],
             stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, timeout=7
         )
 
diff --git a/testping1.py b/testping1.py
index 16af1e0..af17c90 100644
--- a/testping1.py
+++ b/testping1.py
@@ -33,7 +33,11 @@ def is_reachable(ip, timeout=1):
         logging.error(f"Invalid timeout value: {repr(timeout)}")
         return False
 
-    command = ["ping", "-c", "1", "-W", str(timeout_val), str(ip_obj)]  # -W for timeout in seconds (Linux)
+    # ⚡ Bolt: Optimized ping execution by adding `-n` flag.
+    # The `-n` flag skips reverse DNS resolution. Without it, ping attempts to
+    # resolve the hostname for every IP, which can cause multi-second delays
+    # (even with a 1s timeout) if the IP lacks a PTR record or DNS is unresponsive.
+    command = ["ping", "-n", "-c", "1", "-W", str(timeout_val), str(ip_obj)]  # -W for timeout in seconds (Linux)
 
     # ⚡ Bolt: Optimized ping execution by using subprocess.call and redirecting
     # output to DEVNULL instead of using Popen with PIPE.