When your domain is using one of our services, such as Dynadot DNS, Domain Forwarding, or our Website Builder, the domain would be using the name servers ns1.dyna-ns.net and ns2.dyna-ns.net. The name server would contain your domain's DNS records, which would then link any visitors to your website. There's also some more information on name servers and how they work in our help files:
What are name servers? https://www.dynadot.com/community/help/question/what-are-nameservers