D-Link DSL-2740R User Manual page 48

Section 3 - Configuration
DDNS CONFIGURATION
Please access a DDNS web server to obtain a domain name. You can
use the D-Link DDNS server at https://www.dlinkddns.com to receive
a free DDNS.
Please enable Enable Dynamic DNS if you want to use DDNS.
Choose which DDNS web site to use in Server Address.
Type the Host name which you registered with your DDNS service
provider in Host Name.
Type the username/password on the Username/Password/Verify
Password of your DDNS account.
After you have configured the DNS settings as desired, click Apply to
apply the settings.
D-Link DSL-2740R 48