diff --git a/check_pihole.sh b/check_pihole.sh
new file mode 100644
index 0000000..678600a
--- /dev/null
+++ b/check_pihole.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+# Pi-hole service
+systemctl is-active --quiet pihole-FTL || exit 1
+
+# DNS functional test
+dig google.com @127.0.0.1 +short | grep -q . || exit 1
+
+# Blocking test (critical!)
+dig doubleclick.net @127.0.0.1 +short | grep -q "0.0.0.0" || exit 1
+
+exit 0
\ No newline at end of file