When an IP address gets blacklisted IP data, web traffic to your site drops to zero and you no longer receive emails from prospects or customers. It can be a major setback for businesses, and it’s often a sign of malware infections or misconfigured servers. But fortunately, there are ways to avoid being blacklisted in the first place. This article takes a look at what causes an IP or domain to be flagged as suspicious, how to get delisted and some best practices for avoiding being listed again.

What Is Blacklisted IP Data?

Blacklists are lists of IP addresses that have been associated with dangerous activities, such as spamming or hacking. These lists are used by email servers and firewalls to block connections from a particular address, and can be publicly available or privately maintained by security organizations. An IP can be listed for any number of reasons, including mass emailing, port scanning, brute force login attempts, malware distribution, or illegal trade on the darknet.

IPs can also be blocked because they facilitate file sharing without copyright permission or are used for illegal proxies and VPNs. This can be particularly problematic for media and content platforms, which may lose out on traffic as a result of being blocked by security teams.

If your IP or domain becomes flagged, it’s important to understand why and take immediate action. Getting removed from the list will typically involve cleaning up any malware infections, ensuring all devices are updated and implementing strong password practices. You can also reach out to the security platform that maintains the list and request delisting directly. Usually, this involves reviewing recent activity and proving that you are not engaging in any suspicious behavior.