Allocated IP blocks

Is there a list anywhere of allocated IP blocks?

I need to update my IDS sensor's table of valid blocks. It's alarming on some traffic coming from 67, 68 and 219, which I know were not allocated until fairly recently.

Is there a simple list somewhere, i.e:
etc... ?? of course!

Thanks, I was looking at ARIN... wrong place for that, it would seem! :wink:

Rob Thomas maintains a a nice list:

You can also find the converse, the routes that /aren't/
registered (or supposed to be sending traffic), with

whois -h rs-martians