Given an OAuth client ID such as 1234567890-9iuxy238472ny4qmfad0ppg77s61vabo14j0s.apps.googleusercontent.com, how can we find out which Google Cloud project the OAuth client belongs to? If we look closely at OAuth client IDs, we notice that they follow a common pattern: NUMBER-GIBBERISH.apps.googleusercontent.com This pattern isn’t a coincidence: NUMBER is the project number of the Google Cloud project that the OAuth client belongs to, and GIBBERISH identifies the individual Client ID withi...
