If you’re looking to find out if someone is online on Instagram, there are a few things you can do. First, check their profile to see if they have an account. If they do, you can follow them to see what they’re up to. If they don’t have an account, you can also look at their posts and see if there’s anything that interests you. Finally, if you don’t know who this person is and want to find out more about them, it’s best to reach out to them and ask.