Blacklist in detail: FastFlux Tracker IPv4

With the FastFlux Tracker you are able to track FastFlux bots in real time. The collected data flows directly in to the DNSBL service. You can use this DNSBL eg. on your email Gateway to reject spammy emails.

Fast-Flux is a technic used by spammer and malware authors to prevent their spammy site to get shutdown. The goal of FastFlux is, to have multiple (hundreds or even thousands) IP addresses assigned to a (spammy, malware, phishing or scam related) domain.

Last Accessed
2020-11-25 10:10 (UTC) 
Last Checked
When we last checked 53 minutes ago it was working.
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History for (Last 10 Days)

We keep some statistics on blacklists. Below is the graph for We test blacklists by asking them to respond to known IP's that are blacklisted and known IP's that can't be blacklisted. Not every blacklist has such IP's, we test them with what is possible. We keep if we get any response or error messages and the response duration. Lower response times are better. These statistics may be useful for email server administrators to pick which blacklist to use.

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