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What Is DNS?
Understand DNS records, resolvers, and how DNS lookups work.
DNS is the directory layer of the internet. It maps human-readable names like example.com to technical records like A, AAAA, MX, TXT, and CNAME.
Common DNS records
- A and AAAA for IP addresses
- MX for mail routing
- TXT for verification and email policies
- NS for authoritative nameservers
- CNAME for aliases