What Is DNS and How Does It Work?
Learn how DNS turns domain names into IP addresses, how servers and caches handle a lookup, and why finding an address differs from loading a page.
Articles Tagged DNS
Practical FOO.XYZ guides tagged DNS, with commands and troubleshooting examples.
Dangling DNS Records, Placeholder Domains, and the Cost of Lazy IT
Forgotten DNS records and placeholder domains can expose sensitive information. Learn how misconfigurations lead to unexpected DNS traffic and email leaks.
What Is DNSSEC? A Simple Guide to Secure DNS
Learn what DNSSEC is, how it protects DNS records, and how to check signatures, public keys, and resolver validation with simple dig commands.
DNS Troubleshooting with Dig and Drill
Learn to use dig and drill on Linux and FreeBSD to inspect DNS records, compare resolvers, trace delegation, and troubleshoot DNSSEC failures.