Blacklist in detail: IPv4

This is a combined DNSBL listing IPs with 'Hacking activities', 'Hijacked webserver', 'Referer spam'.

Example Response Message
Blocked: Sent spam to spamtrap - see
Last Accessed
2020-09-19 00:40 (UTC) 
Last Checked
When we last checked 1 hour, 50 minutes ago we found that it was not responding to queries. It was last working on 2020-09-19 00:17
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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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