openwrt-packages-dist/net/ddns-scripts/files/usr/share/ddns/default/changeip.com.json

{
	"name": "changeip.com",
	"ipv4": {
		"url": "http://[USERNAME]:[PASSWORD]@nic.changeip.com/nic/update?u=[USERNAME]&p=[PASSWORD]&cmd=update&hostname=[DOMAIN]&ip=[IP]",
		"answer": "Successful"
	}
}