diff --git a/scripts/get-domains-from-cert.sh b/scripts/get-domains-from-cert.sh
new file mode 100644
index 0000000..04b47af
--- /dev/null
+++ b/scripts/get-domains-from-cert.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+#!/bin/sh
+  
+# Check for the presence of the certificate file
+if [ ! -f "$1" ]; then
+    exit 0
+fi
+
+# Extract subjectAltName from the certificate
+openssl x509 -in "$1" -text -noout | grep -E -o "DNS:[^,]*" | sed 's/DNS://g' | tr -d ' ' | tr ',' ' ' | sort | tr '\n' ' '
+