diff --git a/scripts/install b/scripts/install
index 53983d29b39ded8a5eebc43dd593603dd530de0f..f3c029eb2c25f76f2da74ca27e2a8506cfdf0b1b 100755
--- a/scripts/install
+++ b/scripts/install
@@ -3,6 +3,10 @@
 MYSQL_ROOT_PASSWORD=`tr -dc A-Za-z0-9_ < /dev/urandom | head -c 20 | xargs`
 NEXTCLOUD_ADMIN_PASSWORD=`tr -dc A-Za-z0-9_ < /dev/urandom | head -c 20 | xargs`
 
+var=$(for folder in `ls /data/domains`; do cat /data/domains/$folder/.env | grep SUBNET | cut -d"=" -f2; done | sort | tail -n1)
+SUBNET=$(($var +1))
+
+
 echo "SUBNET=${SUBNET}" >> .env
 echo "MAIL_DOMAIN=${MAIL_DOMAIN}" >> .env
 echo "URL=${URL}" >> .env