# Malicious

**urlscan Pro** - Look up how often an observable (IP, hostname, domain, or URL) has been seen in malicious scan results, along with first and last seen timestamps.

 - [GET /api/v1/malicious/{type}/{value}](https://docs.urlscan.io/apis/urlscan-openapi/malicious/lookupmaliciousobservable.md): **urlscan Pro** - Look up how often an observable has been seen in malicious scan results, along with first and last seen timestamps. The `type` parameter selects what kind of observable to query: - *