That is an interesting issue, and one I've never considered before cause I just took the data from MaxMind for granted.
I work for Mozilla crunching numbers. There isn't any way I could share any IP addresses of course. If you pull down the data from MaxMind and do a search for AQ, you'll see a set of IP address ranges that are recorded as being located in Antarctica. We get a small amount of traffic from IP addresses in those ranges.