Different IP address and different locations

I have an iPhone and that's the only device I use to check my email. I decided to look at my recent activity and seen there are a couple different ip addresses and different browsers. I do have the mail app on the iPhone where my account is set up through. Some of the browsers say iOS which is iPhone the other says Windows exhcange active sync. Could this be my mail app? Also it has different locations some out of state? Any insight

 

 

http://forums.whatthetech.com/index.php?showtopic=130405&hl=

Why is that link listed. This is a entirely different question

As reference, if a tech responds.