DNS from zero
How names become addresses, what each record type does, why changes take time and how to query DNS yourself.
- 1What is DNS?The system that turns names like example.com into the IP addresses computers use.8 min
- 2Record types: A, AAAA, CNAME, MX, TXT, NS, CAAWhat each DNS record does, with realistic examples.12 min
- 3How a lookup works, and why changes take timeResolvers, caching and TTLs, and what people call DNS propagation.12 min
- 4Querying DNS with digUse dig to see exactly what DNS answers, from any resolver.10 min
Your certificate
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