Learn

Everything DNSCheckPro watches, explained in plain language. Start with the fundamentals, then dig into DNSSEC, expiration tracking, and posture grading.

Fundamentals

DNS records explained: the building blocks every domain needs

A is for address, MX is for mail, TXT is for everything else. Here's what each DNS record type does, when you need it, and the mistakes that quietly break your domain.

Security

DNSSEC basics: cryptographically signing your DNS

DNSSEC stops attackers from poisoning DNS responses. Here's how the signing chain works, what to enable at your registrar, and the rollover gotchas that take domains offline.

Operations

WHOIS vs RDAP: how domain expiration tracking actually works

WHOIS is the 40-year-old protocol behind every domain expiry check. RDAP is its modern successor. Here's how they differ, why both still matter, and what trips up automation.