If your email isn’t reaching subscribers, there may be a chance that the IP address or domain you are sending from is blacklisted globally. Our free tool checks your IP/domain against 51 DNS based blacklists to see if it is listed.

See if an IP is blacklisted globally are compiled from information gathered by sensors that monitor Internet traffic around the world and identify abnormal behaviours like downloading copyright-violating content, intrusion attempts – sending spam emails or malicious content, etc. Those detected are reported to the relevant blacklist operators, and if a sufficient number of reports are received, an IP address or domain is blacklisted.

Is This IP Address Blacklisted Worldwide? Find Out Now

It is also possible to be blacklisted for using compromised accounts or servers, and poor email practice such as sending email to a large number of recipients who aren’t interested in receiving the message. If you suspect that your IP address or domain has been blacklisted, it is important to understand why so that you can take steps to resolve the issue and avoid being added to another blacklist.

Once you have identified the reasons your IP address or domain has been blacklisted, contact the respective blacklist and follow their removal process. They will likely recommend that you clean up your infrastructure and implement best practices such as correcting both forward and reverse DNS records, ensuring that all devices on your network have the latest software updates, establishing stronger passwords, scanning for viruses, etc. Once the issues are resolved, you can request de-listing from the blacklist, which might be manual or automatic after a certain amount of time.