dnsglobe

dnsglobe answers the question every DNS change raises: has it propagated yet? Run it in your terminal and it queries 34 public resolvers around the world in parallel, draws a world map showing where each answer came from, and flags the resolvers still serving stale records. Free and MIT-licensed, written in Rust.

There's nothing to host. Install it from Homebrew, Cargo, the AUR, Nix, or a prebuilt binary and run it like you'd run dig. Green means everyone agrees, magenta means someone is behind, red means a resolver errored.

It replaces the whatsmydns.net tab you open during every domain move, with the advantage that it lives where you already work. Anyone who touches DNS during deploys, migrations, or cert changes should keep it installed. No pricing math here; it's a free CLI.

The catch: the world map wants a 150-column terminal, and ISP resolvers that refuse outside queries can't be checked, so you're seeing the public resolver view, not every network on earth.