That's... Hard to explain. I suppose you could say we've existed as long as data has, but that's not quite true. As for if we're a planet, that is also... Complicated. The Cityscape has a far bigger library, and there's rumored to be somewhere that contains a volume for every age of rule. I've only been around in the Nine Lords era. It wasn't always the specific Nine that currently rule, of course, and Our Lady is the youngest of them, but they've ruled for thousands of cycles at this point.

[ Cycles, not years, because Digital World. ]