DNS Debugger: Can You Fix These Broken Zone Files?

DNS Debugger 🧠🔍 — Fix the Puzzle, Master the Zone

Do you know your A records from your NS? Can you spot a broken PTR or a missing MX at a glance? DNS Debugger is a fun, fast-paced game that puts your DNS troubleshooting skills to the test!

Each question presents a DNS scenario based on real-world query results and zone file excerpts that are broken, incomplete, or misconfigured. It’s your job to pick the correct solution or explanation. You’ll get instant visual feedback and points as you go! 🧩

Learn While You Debug

Designed for sysadmins, SREs, and network engineers
Instant scoring and progress tracking
Built-in dark mode for night-time learning 🌙

Quick Links

🎯 Launch DNS Debugger Now

Check out other tools like Regex Builder or the CIDR Match Trainer!

Skylar Pearce

My name is Skylar Pearce, I have been working as a System Administror since 2013 as well some side consulting work. During my career I have worked with everything from Active Directory and vCenter to configuring routers and switches and phone systems, documenting and scripting my way through the whole thing. I have a Security+ certification and am currently working on my PenTest+. Throughout my career I have gained almost all of my knowledge from blogs like this. It is now time for me to pay it back. Over time I have gathered scripts and tricks over the years that I will share on this site. A lot of the posts here will be mainly reference posts, some will be full on how to’s. I am happy to go into more depth on any other topics I go over here, just make a comment on a post. I will do my best to post once a day on weekdays but as I run out of ideas it may slow down. My WordPress skills are still growing so the site will likely get better over time as I learn. You can reach me at contact@allthesystems.com or on LinkedIn