Instantly find out if your domain or IP address has been flagged on any major spam or security blacklists that could be affecting your reputation.
Our tool cross-references your domain or IP against dozens of the most trusted and widely used spam and malware blacklist databases simultaneously.
Being listed on a blacklist can severely impact email delivery. Use our Blocklist Lookup to monitor your sending reputation and resolve issues promptly.
FAQS
What is a Blocklist Lookup?
A Blocklist Lookup checks whether your domain or IP address has been added to any spam, phishing, or malware blacklists maintained by security and email providers.
Why would my domain be on a blocklist?
Domains can get blacklisted due to spam complaints, malware infections, phishing activity, or being associated with a previously flagged IP address or hosting environment.
How do I check if my IP or domain is blacklisted?
Enter your domain name or IP address into the Blocklist Lookup tool and it will instantly scan multiple blacklist databases and show you the results.
How many blacklists does the tool check?
Our tool checks against dozens of major spam and security blacklist databases in one go, saving you the time of checking each one individually.
What should I do if my domain is on a blacklist?
Start by identifying and fixing the root cause such as malware or spam, then submit a delisting request directly to the blacklist provider that flagged your domain.
Can being blacklisted affect my email deliverability?
Yes, blacklisting is one of the main reasons emails land in spam folders or get rejected outright. Regular checks with our tool help you catch and resolve issues early.