Ireland-based Afilias provides Internet infrastructure solutions, including managed DNS. Afilias' strategy against DDoS attack is "Security though diversity."
This diversity includes several facets. One is geographical diversity: Afilias has 18 global locations. If one locale is knocked out by a DDoS attack, other nodes can still resolve queries. Diversity, in fact, underlies every layer of Afilias' solution. Afilias protects customers against DDoS with multiple bandwidth providers by using different types of hardware and operating systems, a mix of differing firewalls and routers and by using multiple types of DNS resolution software. This platform of diversity means that the entire infrastructure will not be compromised in case of an attack.
Afilias offers customers secondary or multiple secondary DNS servers. This way, if primary operations fail, the secondary provider can seamlessly resolve DNS queries.
