Check if your domain or IP appears on any spam/abuse blacklists that could harm email delivery and website accessibility.
Identify malware, phishing, or suspicious activity reports associated with your domain across major security databases.
Monitor your online reputation and receive alerts if your assets get listed on any blocklists for immediate remediation.
FAQs
What is a blocklist check?
A blocklist check scans over 100+ spam and abuse databases to determine if your domain, IP address, or email server appears on any email blacklists that could affect email deliverability.
Which blocklists do you check against?
We monitor major lists like Spamhaus, SURBL, Barracuda, Spamcop, and UCEPROTECT, as well as specialized lists for phishing, malware, and compromised servers.
How often is your blocklist data updated?
We refresh our blocklist database hourly, with real-time API checks available for premium users. Most lists update continuously as new threats emerge.
Why would my IP/domain be blocklisted?
Common reasons include: sending spam (intentionally or compromised), having poor email practices (no SPF/DKIM), being on a dynamic IP range, or being associated with malicious activity.
What's the difference between IP and domain blocklists?
IP lists track spammy servers, while domain lists target phishing/malware sites. Some lists like Spamhaus maintain both IP (SBL) and domain (DBL) databases.
How do I get removed from a blocklist?
Each list has its own delisting process. We provide direct links to removal forms when available. Most require fixing the underlying issue before delisting.
Can I check multiple IPs/domains at once?
Yes, our bulk checker allows up to 50 simultaneous lookups. Results are exported as CSV showing which lists flagged each entry.
Why do some blocklists show "unknown"?
This means the list doesn't publish their full database. We can only confirm positive listings, not definitively confirm you're not listed.
How accurate are your blocklist results?
While 99%+ accurate, we recommend verifying directly with critical lists like Spamhaus before taking action, as their real-time data may differ slightly.
Can I monitor my status automatically?
Our monitoring service (optional) alerts you within 15 minutes of new blocklist appearances, with historical tracking to identify repeat issues.