What Is DNS, and Why Does It Break?

You type an address, hit enter, and a page shows up. Or it doesn’t, and you have no idea why. This episode walks through everything that actually happens in between: cache checks, DNS lookups, TLS handshakes, and packets hopping across routers and fiber before your page assembles on screen.

The goal is a clear mental model, not a networking course. You’ll learn how DNS differs from the website itself, why HTTPS matters on public Wi-Fi, and why one tab spins while another loads instantly.

I close with a practical troubleshooting playbook: separate Wi-Fi problems from internet problems with a quick cellular test, try a trusted resolver like 1.1.1.1 or 8.8.8.8, reboot things in the right order, and figure out whether the slow part is your device, your network, or someone else’s server. Next time someone says “the internet is down,” you’ll know where to look.