Free Online Tools for Looking up Potentially Malicious Websites

Several organizations offer free on-line tools for looking up a potentially malicious website. Some of these tools provide historical information; others examine the URL in real time to identify threats:

  • AVG LinkScanner Drop Zone: Analyzes the URL in real time for threats
  • BrightCloud URL/IP Lookup: Presents historical reputation data about the website
  • Comodo Web Inspector: Examines the URL in real-time.
  • Cisco SenderBase: Presents historical reputation data about the website
  • Cyscon SIRT: Provides historical data for IP addresses, domains and ASNs.
  • Is It Hacked: Performs several of its own checks of the URL in real time and consults some blacklists
  • KnownSec: Presents historical reputation data about the website; Chinese language only
  • Norton Safe Web: Presents historical reputation data about the website
  • PhishTank: Looks up the URL in its database of known phishing websites
  • Malware Domain List: Looks up recently-reported malicious websites
  • MalwareURL: Looks up the URL in its historical list of malicious websites
  • McAfee Site Advisor: Presents historical reputation data about the website
  • McAfee TrustedSource: Presents historical reputation data about the website
  • MxToolbox: Queries multiple reputational sources for information about the IP or domain
  • Quttera ThreatSign: Scans the specified URL for the presence of malware
  • Reputation Authority: Shows reputational data on specified domain or IP address
  • Securi SiteCheck: Scans the URL for malware in real time and looks it up in several blacklists
  • Trend Micro Web Reputation: Presents historical reputation data about the website
  • Unmask Parasites: Looks up the URL in the Google Safe Browsing database
  • URL Blacklist: Looks up the URL in its database of suspicious sites
  • URL Query: Looks up the URL in its database of suspicious sites and examines the site’s content
  • URLVoid: Looks up the URL in several website blacklisting services
  • VirusTotal: Looks up the URL in several databases of malicious sites
  • vURL: Retrieves and displays the source code of the page; looks up its status in several blocklists
  • Wepawet: Analyzes the URL in real time for threats
  • Zscaler Zulu URL Risk Analyzer: Examines the URL using real-time and historical techniques

Any on-line tools that should be on this list, but are missing? Let me know. My other lists of on-line security resources outline Automated Malware Analysis Services and Blocklists of Suspected Malicious IPs and URLs.

Updated

About the Author

Lenny Zeltser is a business and tech leader with extensive experience in information technology and security. His areas of expertise include incident response, cloud services and product management. Lenny focuses on safeguarding customers' IT operations at NCR Corporation. He also teaches digital forensics and anti-malware courses at SANS Institute. Lenny frequently speaks at conferences, writes articles and has co-authored books. He has earned the prestigious GIAC Security Expert designation, has an MBA from MIT Sloan and a Computer Science degree from the University of Pennsylvania.

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