Dyn Remote Access (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:

Wildcard
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.
ra_modify_hostname
5.  Click Save Changes to commit the changes.