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IOC Lookup

Checks an indicator of compromise — an IP, file hash (MD5/SHA1/SHA256), URL, or domain — against VirusTotal and (for IPs) AbuseIPDB in one request.

Unlike almost every other tool on this site, this one is not purely client-side — whatever you enter is sent to this site's own server, which queries VirusTotal/AbuseIPDB on your behalf (their APIs don't allow direct browser requests, and the API keys can't be exposed client-side). Don't paste anything here you wouldn't want checked against third-party threat-intel services.

Why not just check both sites separately?

This exists purely as a time-saver for the common case — pasting one IOC once instead of opening two tabs. It's a thin combination of both services' public APIs, not a replacement for either: for deep investigation, the full VirusTotal or AbuseIPDB report will always have more detail than this summary view.