If the customer's network infrastructure includes its own DNS servers, they also need to be protected from the threat of DDoS.
The DNS service is used from translation of the website's domain name into an IP address for routing the requests from the visitors. In case of a DNS server failure the website will soon stop operating properly.
In order to prevent this happening (including the DDoS attacks on the DNS server) we offer our customers the distributed protected DNS which is able to operate in one of the following modes:
You can learn more of this service here.