diff --git a/checks/check_dyndns_ip.sh b/checks/check_dyndns_ip.sh
new file mode 100755
index 0000000..b0db608
--- /dev/null
+++ b/checks/check_dyndns_ip.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+dyndns_name="da-checka.ddnss.de"
+
+myip="$(curl -s http://whatismyip.akamai.com/)"
+dnsip="$(dig $dyndns_name +short)"
+
+#debug
+#echo -e "My IP:\t$myip\nDNS IP:\t$dnsip"
+
+if [ "$myip" = "$dnsip" ]
+then
+	echo "OK - My IP = \"$myip\"; DNS IP = \"$dnsip\""
+	exit 0
+elif [ "$myip" != "$dnsip" ]
+then
+	echo "CRITICAL - My IP = \"$myip\"; DNS IP = \"$dnsip\""
+	exit 2
+else
+	echo "UNKNOWN - Unbekannter Status"
+	exit 3	
+fi
+