Plain-English guides
Short, honest explainers for the things our tools check. Written for people who'd rather understand it than memorise it.
How DNS propagation works
Why a change you made five minutes ago shows up for some people and not others, and how to make the next one land faster.
RDAP vs WHOIS: what is the difference?
The old plain-text protocol, its structured replacement, and what you can still see since GDPR.
SPF, DKIM and DMARC explained
Three DNS records that stop people sending email as you. What each one does, and the order to set them up.
How to use LookupOwl from AI agents with MCP
Connect Claude, ChatGPT, Cursor or VS Code in one line, and the prompts that work best.