We all know that browsing the web in Incognito Mode or Private Browsing Mode is a great way to shop for gifts for household members without leaving traces of your browsing history on your computer. But your ISP will always know which websites you visit. And you’d better believe they keep track of that.
In much the same way your phone company knows every single phone call you placed, your ISP gathers data on your internet activity. Typically, this is done anonymously for marketing purposes. Your ISP can use your browsing data to inject ads into web pages your looking at. Or, they can simply sell the anonymised data to a marketing company.
To keep your data anonymous from an ISP, you can use a virtual private network (VPN) service.