Jetpack subscribers

I’m using the Jetpack widget (or whatever it is) for email subscriptions to the site. It says I have 388 subscribers, but I cannot find that list at all. I have a list that was made through the Subscribe2 plug-in. But that’s only 28 names.

where do i find the subscribers i get through Jetpack?
http://bergsland.org. It’s the widget on top of the right sidebar.