Determine age, region, source of leaked credentials using RadioCarbon

RadioCarbon is an interesting tool developed by Florian Roth, focused on checking age and origin of a credential leak:

Typically you get leaked credentials in form of list of email addresses or user names, cleartext passwords or password hashes, and you have no idea how relevant they are and who to inform about the leak: for example, usually you don’t have information about the origin of the leaked credential, and these data could be obsolete.