IP addresses do get recycled. Each ISP usually purchases a block of IP addresses. Which can be a few hundred to thousands. Your ISP assigns IPs to computers when they connect. Sometimes a random one from the pool is chosen, other times it's the lowest IP available that's assigned. Whenever your computer connects online, your ISP records the time, the fact that it was you who signed on, and the IP address you were given. Most ISPs do this just in case a user does something illegal, it can be traced back to the person. IP addresses do get recycled, and it can be assigned to someone else under the same ISP.
Your ISP gave you the IP address so they already know what it is & where you are. You can't really hide your IP from your ISP because they are the one who gave it to you. You can hide your IP using proxy or hide IP software if you want to access websites that you don't want to display your real IP. But, you can't hide your original IP. It is the IP of your ISP which is being used to connect to the internet. Without their IP, you can't connect to the internet and you can't change it.
|