How Anycast DNS Delivers Sub-20ms Lookups

Network Design diagram · made in Skemio

Anycast DNS routing diagram showing global clients connecting through internet transit to three regional PoPs advertising identical IP addresses.

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What it shows

Multiple geographic nodes advertise the exact same IP block via BGP.
BGP routing automatically steers clients to the topologically nearest PoP.
Built-in DDoS resilience absorbs attacks locally without collapsing peers.

The takeaway

Anycast turns the global internet routing table into a zero-latency load balancer.

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