Anycast DNS Explained: Routing Traffic to the Geographically Nearest Server Node
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Published by ZodHost Engineering Team
Executive Summary & Key Takeaways
Understand how Anycast BGP routing reduces global DNS lookup times to under 15ms and provides built-in resilience against regional outages.
Unicast vs Anycast DNS Architecture
With Anycast DNS, multiple global nameserver nodes advertise the exact same IP address via Border Gateway Protocol (BGP). Internet routers automatically direct each DNS query to the topologically nearest healthy PoP, delivering lookup responses in under 15 milliseconds worldwide.
Tags:
#Anycast DNS
#DNS latency
#BGP routing DNS
#global DNS nameservers
#fast DNS hosting
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