Dozens of sellers on the freelancing platforming Fiverr claim to have access to a powerful data tool used by private investigators, law enforcement, and insurance firms which contains personal data on much of the U.S. population. The sellers are then advertising the ability to dig through that data for prospective buyers, including uncovering peoples’ Social Security numbers for as little as $30, according to listings viewed by 404 Media. Fiverr removed the listings after 404 Media inquired about the practice.

The advertised tool is TLOxp, maintained by the credit bureau TransUnion, and can also provide a target’s unlisted phone numbers, utilities, physical addresses, and more.

There is a good chance many of these listings are scams, designed to take peoples’ money without providing the requested data, or by sourcing it in another way and presenting the results as a TLOxp search. Regardless, the advertisements’ existence presents a content moderation issue for Fiverr.

404 Media has previously reported on how TLOxp and similar tools have become a secret weapon in the digital underground, with hackers and fraudsters using the capabilities to dox people in minutes. The tools can be especially powerful because some use credit header data, which is personal information people provide to their financial institutions in the normal course of business of obtaining a credit card, which then trickles down to a wide web of other companies.