dydns.org
noip.com
freedns.afraid.org
zoneedit.com
oray.net
Here is an example of using noip.com for DDNS.
1. Register domain in DDNS service provider. Please note the UCM630xA needs to have public IP access.
Figure 28: Register Domain Name on noip.com
2. On Web GUISystem SettingsNetwork SettingsDDNS Settings, enable DDNS service and
configure username, password, and host name.