Master DNS from the Ground Up
Whether you're a beginner or looking to deepen your knowledge, our comprehensive guides will help you understand and manage DNS like a pro.
Why We Report a Range, Not an Exact Time
Outage durations from any outside monitor are interval-bound. Why we report verified bounds instead of dressing a guess up as a measurement.
What is DNS? A Complete Beginner's Guide
Understand how the Domain Name System works, from basic concepts to the DNS resolution process that powers the internet.
DNS Record Types Explained
Learn about A, AAAA, MX, NS, TXT, CNAME, SOA, CAA, and other DNS record types. Understand when and how to use each one.
How DNS Propagation Works
Discover why DNS changes take time to propagate globally, what affects propagation speed, and how to minimize delays.
DNS Security Best Practices
Protect your domain with DNSSEC, CAA records, and email authentication. Learn to prevent DNS hijacking and spoofing attacks.
Ready to Put Your Knowledge to Practice?
Use our free DNS tools to lookup, analyze, and monitor your domain's DNS configuration.