Click on the v6 prefixes tab and look at them. There's a US, Taiwan and Europe /32's, and then one additional /48 out of the US /32.
more specifically, we did an initial /48 test deployment, to make sure we
weren't going to screw things up royally, then we anchored a /32 in each
registry region we do business in, and announced those out. Now that the
testbed phase is over, I can probably go back and remove that more specific,
since the covering /32 is in place; but the other 3 /32s can't be aggregated.