@DerekTsui 

you can only have one DDNS for each wan interface.

  @MR.S 

Tks for your input, I will not use it at the same time. Just want to input for spare only.

MR.S wrote

  @DerekTsui 

 

you can only have one DDNS for each wan interface.

@DerekTsui to use more domains of no-ip, use custom DDNS instead:

In your case with 2 domains: paxtontsui.no-ip.biz and xxx.myftp.biz (replace yourusername yourpassword please)

Update URL: http://yourusername:yourpassword@dynupdate.no-ip.com/nic/update?hostname=paxtontsui.no-ip.biz,xxx.myftp.biz#[DOMAIN][USERNAME][PASSWORD]

Add an entry and fill whatever you want (for example Account Name blabla, password blabla, Domain Name bla.bla), no need to fill your correct values.

  @DerekTsui 

if you use no-ip it should work. go to no-ip administration console. create a DDNS Key, register the desired domain in the group, when done go to the router, log in with username and password to no-ip group you created under domain enter all,ddnskey,com, then all registered domains in the group will be updated.