Step 1: Login to your ZyXEL router via the default gateway.

Step 2: Click on “Network” and then “DDNS.”

Step 3: Click “Enable Dynamic DNS.” Select No-IP under Server Provider. Enter your No-IP hostname, username and password. 

Step 4: Click on “Apply.” 

Congratulations, the ZyXEL router will now send No-IP updates whenever the IP address changes.