System Labels

System Labels are classifications applied to scans and hostnames by dynamic rules managed by urlscan. Labels are returned via the labels field in Search API responses, which is a different namespace than user-defined tags. The idea of labels is that these are stable and exhaustively documented, whereas user tags can be arbitrary, short-lived and in some cases imprecise.

We curate labels covering common classification objectives that our customers can use to include or exclude from their search results.

Here are some examples of currently available labels:

• content.mature - Page likely contains mature content.
• content.opendir - Page is showing an open directory.
• domain.parked - Domain is currently parked / for sale.
• site.suspended - Site has been suspended.
• hosting.free - Free hosting provider without required payment.
• hosting.static - Static file hosting (S3, Backblaze, DO Spaces).
• tech.captcha - Site employed a captcha prompt.
• tech.captcha.waiting - Site is showing an unsolved Captcha prompt.