Having Secondary DNS, whether with Dyn or another provider is a best practice for DNS management.
Click Here to add Dyn as a Secondary DNS provider.
Click Here to add your non-Dyn Secondary DNS providers in your Dyn account.
This is the place to learn how to get the most out of your Dyn services. Here you will find official support documentation, a changelog for each product, a list of frequently asked questions, ancillary articles, and a glossary of technical terms and jargon.