Web Solution Master Blog

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

A client in Germany registers münchen-bäckerei.de, a shop in Russia runs on a .рф domain, and a Japanese brand wants its name in kanji. They type