
But your internet activity can be tracked using it, meaning you can become a receiver of targeted ads a constant reminder that someone or something is monitoring what you do online, which can upset some people. IP addresses don't hold much information about you at all names, addresses, payment information and all the other things attackers like to get their hands on can't be ascertained simply from having your IP address. Each device will be assigned its own address by the ISP so it knows how to route traffic to the right one.

Addresses aren't carried over devices either. Each ISP needs to assign your device an address so you'll get a different one at home to work and from your friend's house to a hotel. IP addresses can change frequently, connecting to a new network will leave you with a different address as it's a different ISP servicing your device.
