DNS Resolver Race

Guide a DNS query packet through the resolution chain.
Click the correct server at each hop to advance.
Wrong hops = -50 pts + 2s freeze.
Faster = higher score. Ten levels total.

Hover over servers to learn what they do.
Topics: record types, caching, TTL, DNSSEC, DNS poisoning.

Resolving

Record: --

Resolution Steps

How DNS Works When you type a domain name, your computer needs to find the IP address.
This process is called DNS resolution. Click START to begin.

TTL Cache 300s

DNS Resolver Race

Simple A Lookup

Resolution Complete

Race Complete