Strengthening trust and safety across the internet
Spamhaus Project is the authority on IP and domain reputation. This intelligence enables us to shine a light on malicious activity, educate and support those who want to change for the better and hold those who don't to account. We do this together with a like-minded community.
7,500,000IPs analyzed every 24 hours
3,000,000Domains processed every 24 hours
4,500,000,0004.5 billionProtected User Mailboxes
1,500Active botnet command and controllers detected
Global internet traffic changes daily, as do the activities of adversaries. These statistics are indicators based on daily averages; actual daily figures will fluctuate. Are you listed in one of Spamhaus' blocklists?
Do you have problems sending email? Do you need to check if an IP address or domain name is on one of our blocklists?
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Last updated: 3rd November 2026
Countries
BestMost improved
Pakistan-92%Botnet C&Cs hostedHosting botnet command and controllersWorstLeast improved
Latvia+300%Botnet C&Cs hostedHosting botnet command and controllersNovember 2026
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