Does anyone know if iTunes is under maintenance?

Whether I'm on a computer or my iPod touch (5th gen, if that's relevant in any way), iTunes won't download anything. I tried to fix it by logging out on my iPod, but it won't log back in, instead showing the same message as when I tried to load apps: "Cannot connect to iTunes Store". Due to the consistency between devices, I'm pretty sure this is a problem on Apple's end, so I need to know if I'm right. Any tips?