The best way to check your insurance policy online is to go to the website of your insurance provider. Most insurance companies provide online portals where policyholders can log in and view all of their policy information 24/7. If you can't remember the name of your insurance provider, you can use the National Association of Insurance Commissioners (NAIC) tool to find the company's contact info based on your policy number or address: https://eapps.naic.org/cis/
Once you're on your insurance provider's website, you'll need to create an account if you don't already have one. This account will allow you to access your insurance information and make changes depending on the features available.
In addition to seeing the details of your policy, you can also use your account to make payments, update contact info, and access any other services your insurer might provide.
If you need help accessing your insurance policy online, contact your insurance provider's customer service line. They should be able to provide you with step-by-step instructions on how to create an account and view your policy details.