Yes, that's correct -- I'm in the USA, and not in Europe or Africa. What is your point with this? ARIN has, of course, delegated my assigned IPv6 network to my ISP; you do realize that this is SOP for ARIN?
I'm saying that perhaps the 2600::/16 delegation is especially reserved for a certain class of user in order to tag us as something. Surely, my own ISP holds more delegations than that slice alone. It's certainly standing out like a sore thumb to anyone analyzing logs. As I said, it can't be merely a coincidence.
Interestingly, I also subscribe to mobile voice/data service from the same ISP, and activating mobile data here at home gives me, sure enough, another 2600::* delegation.