Esadax offers advanced DNS DDoS protection as part of their PremiumDNS service. This service utilizes Anycast DNS to distribute queries across multiple global servers, helping mitigate DDoS attacks by redistributing traffic during an attack. Additionally, they provide a Content Delivery Network (CDN) which caches content worldwide and can help manage high traffic or DDoS situations by redistributing content accordingly.

Key points about Esadax's PremiumDNS include:

1. DNSSEC Availability: DNSSEC is available only for TLDs that support it.
2. Domain Expiration Handling: PremiumDNS aligns with the domain's expiration date, adjusting costs if the domain's expiration is within a year or more away.
3. Third-party DNS Transition: Switching from another provider may cause downtime unless records are manually transferred to Esadax.