The IP Security Lookup tool provides a consolidated threat intelligence assessment for any domain or IP address — aggregating blacklist status, malware associations, phishing flags, spam scores, and abuse indicators into a single, fast report. Rather than pivoting across multiple threat intelligence sources manually, IP Security Lookup centralizes the most actionable security signals in one query.
When a security alert fires — a suspicious domain in a phishing email, an IP seen in firewall logs, a URL from an endpoint detection — the first question is always: is this known-bad? IP Security Lookup answers that immediately by checking the indicator against multiple threat intelligence databases and returning a clear threat assessment. Combine with WHOIS Lookup and Historical DNS Lookup to build a complete incident picture.
Email security gateways and administrators use IP Security Lookup to check domains and IPs appearing in suspicious emails — verifying sender reputation, checking if the sending domain is on spam blocklists, and confirming whether the sending IP has been associated with phishing campaigns. Pair with MX Lookup to verify the full mail routing configuration.
If your website has been compromised, attackers often use it to serve malware or send spam — resulting in blacklisting that affects your site's search engine rankings, email deliverability, and user trust. Use IP Security Lookup to check if your domain appears on any blacklists, identify which lists it's on, and begin the delisting process. Early detection minimizes the reputation damage from compromises.
Security service providers integrate the IP Security Lookup API into automated triage workflows — automatically enriching every new indicator with threat context before routing to analysts. For processing large indicator batches from threat feeds, use Bulk IP Security Lookup for simultaneous assessment of hundreds of domains and IPs.
If your domain appears on a blacklist, check the blacklist's website for their removal request process. Most require you to demonstrate the malicious activity has been resolved before granting delisting. Our Security API includes blacklist-specific metadata to streamline this process.
