We're a reseller with ThePlanet for dedicated servers. I was just looking round our orbit account out of boredom really, and noticed a couple of things that i'm curious about.

On the network overview page, i've noticed that the following customer access routers are marked in red:

dllstx2: car12, car13
dllstx4: car17, mxr01
dllstx5: mxr01

What is the difference between routers that are marked in red, and routers that are not marked?

I'm also slightly curious on the naming of the data center's on that page. Mainly the numbering going from 2 to 4. Was there ever a dllstx3 datacenter, and if so, what happened to it?