active
dnsbin.ca
A browser-only DNS playground — mutate any zone in the resolution chain and watch a recursive resolver walk it step by step.
Started May 23, 2026 dnsbin.ca
web dns devtools
dnsbin.ca is the newest member of my pastebin.ca family: a DNS playground that runs entirely in the browser. You can edit any zone in the resolution chain — root, TLD, authoritative — and then watch a recursive resolver walk it one step at a time, so you can actually see how a name gets resolved (and where it breaks).
Every trace gets a permanent, shareable URL, so I can hand someone a link that reproduces an exact DNS scenario. It’s equal parts teaching tool and debugging sandbox.