Free Domain Blocklist Checker
Check if your domain is listed on public blocklists for spam, malware, or phishing. Scans multiple threat intelligence sources including VirusTotal, Google Safe Browsing, Talos Intelligence (Cisco), and dozens of public blocklists. Protect your domain reputation and email deliverability.
Multiple Blocklists
Check against dozens of public blocklists covering spam, malware, phishing, and threat intelligence
External Resources Check
Enable browser scan to check all third-party domains your site loads - identifies blocklisted external resources
Threat Intelligence
Integrates VirusTotal, Google Safe Browsing, and Talos Intelligence to detect domains flagged by security vendors
What We Check
Public Blocklists
- Spam and email blocklists
- Malware distribution domains
- Phishing site databases
- Known malicious domains
Threat Intelligence
- VirusTotal security vendor checks
- Google Safe Browsing status
- Talos Intelligence (Cisco) blocklist
- Community reputation scores
- Historical threat data
Why Blocklist Monitoring Matters
Being listed on blocklists can severely impact your business. Email deliverability drops, browser warnings appear for visitors, and your domain reputation suffers. Regular monitoring helps detect and resolve listings quickly.
Our scanner checks your domain against multiple sources and can optionally scan all external resources loaded by your website to identify compromised third-party services.
- Protect email deliverability and sender reputation
- Avoid browser security warnings for visitors
- Detect compromised third-party scripts and services
- Monitor domain reputation in real-time
Want the Complete Picture?
FREEThis Blocklist Checker is great for a quick check, but our Full Security Scan gives you a comprehensive security audit in one go.