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: 4.0.0.0/8 6.0.0.0/8 .... 219.0.0.0/24 etc... ?? --- "The avalanche has already begun. It is too late for the pebbles to vote." -- Kosh