I add re-actively. I figure there are "legitimate" IP's that companies use and I only look at IP addresses that are 'vandalizing' my servers with inappropriate

I add re-actively. I figure there are "legitimate" IP's that companies use and I only look at IP addresses that are 'vandalizing' my servers with inappropriate scans and block them. If I saw the two you have identified, then they would have been added. I do play a balance between "might be a game CDN" or a "legit server" and an outright VPS that is being used to abuse other servers. But thanks, I will keep an eye on those two ranges.