What is Anycast and What Are Its Benefits

By using ANYCAST, DNS queries are not routed to a single specific server, but automatically directed to the nearest available node in a global network. This results in significantly improved response times, higher availability, and increased resilience against overload and attacks.

The traditional DNS mode, known as UNICAST, relies on a single DNS server (or a specific target) with a defined IP address. All DNS queries, regardless of their origin, are directed to that single server. If this server becomes unavailable or overloaded, the service becomes inaccessible to all users.

ANYCAST addresses this limitation by making the same IP address available across multiple physical DNS servers distributed around the world. Each of these servers provides the same service and is part of a single logical infrastructure. Users are automatically routed to the node that is closest and currently available from a network perspective. If one server goes offline or becomes overloaded, traffic is seamlessly rerouted to another functional node, without the user noticing any interruption.

This architecture offers several key benefits. It reduces latency thanks to the geographic proximity of servers, distributes traffic evenly across multiple locations, and significantly enhances resilience against outages and large-scale DDoS attacks. Malicious traffic is dispersed across the network, preventing a single point of overload.

In WEDOS.zone, ANYCAST is deployed as the default architecture. Once a domain is delegated to the assigned DNS servers, it immediately begins to benefit from the global ANYCAST network. No additional configuration is needed—service is active instantly and without user intervention.

ANYCAST DNS within WEDOS.zone is designed for individuals, businesses, and operators of large domain portfolios who require speed, reliability, and high availability of their services on a global scale.