Scribbr is the only third-party service licensed to use the actual Turnitin plagiarism software. They offer a for the first 20 pages (though the full report requires payment). This is 100% legal and safe, and they do not store your paper in the global Turnitin repository.
It is crucial to understand that Turnitin is a paid subscription service utilized by universities and schools. It is not a free public utility. The Class ID and Enrollment Key are not generic passcodes; they are specific credentials generated for a paid account. When a student searches for these online, they are often looking for shared credentials posted by other students or, in some cases, fraudulent repositories. However, Turnitin’s security protocols often flag or lock accounts that have an unusually high number of enrollments from disparate locations, rendering these "free" IDs defunct almost as quickly as they are posted. Furthermore, legitimate free access is generally non-existent outside of a paid institutional license. turnitin class id and enrollment key free