When you use a VPN, your Internet Service Provider (ISP) can’t tell what you’re doing online or where your traffic is originating from. After all, the connection is secured using highly robust encryption algorithms.That means your ISP can’t see what websites you’re visiting, what files you’re downloading, or anything else you’re up to once connected. However, it’s possible they might be able to decipher that your IP address belongs to a VPN provider.