NOX is a personal data-checking service that helps people understand what information about them may be circulating online. Through its Telegram bot, users can request a report using details such as a name, phone number, email address, or social profile. The service says it searches more than 9,000 databases and 400 open sources, covering over nine billion records, and can produce a report in a few minutes.

NOX offers checks for possible data breaches, exposed passwords, SIM cards linked to a user, fake accounts, debts, loans, court cases, travel restrictions, and other records. It also provides searches involving vehicle and property details, company and legal-entity information, and selected personal identifiers. Some checks are described as searches of public registries, while others are intended for users checking their own information with consent.

The brand emphasizes anonymous requests, private results, and minimal data retention. Customers can purchase individual checks or choose a service plan, with payment options including bank cards, instant bank transfers, cryptocurrency, and Telegram Stars.