It's not my own IP, but our IP block. As an institution we have a couple of big networking related hats, so we have a couple of B blocks (/16 networks) for ours

It's not my own IP, but our IP block. As an institution we have a couple of big networking related hats, so we have a couple of B blocks (/16 networks) for ourselves. The IP was from one of these blocks. However, these network operations (and CDN related stuff) are not managed by us, but by a couple of high profile guys next door. I knew we had an Akamai node, because the machines were shipped recently and we had a chat about it. Funnily, some of the performance optimizations on Akamai's disk access algorithms (SSDs were not dime a dozen back then, so people were still optimizing for spinning drives) was apparently developed by a friend of mine, but I don't know any details about that.