DynID is the integrated logon credentials that allows customers to: (1) access both Managed DNS and Email with one logon, (2) create and manage their own support tickets, (3) reset passwords online, and (4) manage credit cards for billing.
Unsure if your account can use this feature? See Dyn’s DNS Products Comparison chart.
In addition to a single DynID, Dyn accounts still benefit from a 2-Factor Authentication process for increased account security.
Note: Only the person with DynID Billing permissions on the account can reset credit card information.