For practical purposes, you could approximate it based on whether the cookie is first-party or third-party and on the amount of time until the cookie's expirati

For practical purposes, you could approximate it based on whether the cookie is first-party or third-party and on the amount of time until the cookie's expiration. For the most part, first-party cookies with a short time to expiration are allowed without warning under the EU law, all other cookies require the warning.