If you do not have an exclusive internet IP address to the stick, there are other ways to get to it(like LogMein). https://en.wikipedia.org/wiki/NAT_traversal
Your IP address may be a NAT IP. Your IP address is actually a LAN IP , which leads to an Internet routable IP ,and you are sharing that with many other users
Some cell data sticks/phones may be allow you to see that LAN IP(10.x.x.x) in your data connection page.