Dynamic DNS (DynDNS Pro) hostnames can be easily modified after being created. You can modify the service type, TTL, and more.

1.  Log into your Dyn account. Screen Shot 2014-10-21 at 9.27.30 AM
2.  Click on My Hosts. Screen Shot 2014-10-21 at 9.24.43 AM
3.  Select the hostname that you would like to modify from the DynDNS Hostnames list. ra_modify_hostnames
4.  The following fields can be modified on an existing hostname:

Ensures that if you or someone you’ve entrusted with your hostname appends the hostname with a prefix (e.g., www.) that it will still resolve.
Service Type
Looking to do some mail routing or modify the TTL? Click here for help.
5.  Click Save Changes to commit the changes.