Web Solution Master Blog

When you change your domain's nameservers at your registrar, nothing visible happens on your DNS host, and nothing changes on your website. Yet withi

You update an A record, test the site, and it still loads the old server. A colleague on another network sees the new one. Ten minutes later you see

Here's a scenario that confuses even experienced developers. You're setting up api.example.com. Before adding the record, you run a quick lookup to

A firewall rule that allows "DNS" on UDP port 53 and nothing else looks perfectly reasonable — and it will work for months. Then one day DNSSEC-signe

Run dig against almost any domain and you'll see a line you've probably skimmed past a hundred times: ; EDNS: version: 0, flags:; udp: 1232. That

You add a CNAME record pointing www to example.net, save it, and the site breaks. A lookup shows the record now points to `example.net.example.co