As web creation professionals, we live in the visual world. We design pixel-perfect layouts, craft compelling user experiences, and build powerful websites. But underneath all that beautiful design, a complex system of addresses and routing makes the internet work. When that system breaks, or even just hiccups, our sites go down. That's when we need to pull out the detective's magnifying glass. For the internet's phonebook, the Domain Name System (DNS), that tool is nslookup.
