Spam Activity: Key Statistics
December 1,2023 - February 29,2024

Each reporting period, we analyze domain names reported for spam. We collect spam reports from three reputation blocklists (Spamhaus, SURBL, Invaluement). We eliminate duplicates and enhance these reports with other metadata — domain and IP address registration data, ICANN registry and registrar monthly reports, routing data, attack type, and other indicators — to create spam records. We use the spam records to measure and report key statistics for each reporting period.

Measurement Count
Total number of spam reports collected from feeds this quarter 1,559,299
Total number of spam records produced from spam reports 1,358,366
Unique domain names reported for hosting spammed content or spambots 649,472
Top-level Domains (TLDs) with domain names reported for hosting spammed content or spambots 631
Registrars (by distinct IANA ID) that had gTLD domains under management reported for hosting spammed content or spambots 2,219
Registrars (by distinct name) that had domains under management reported for hosting spammed content or spambots 3,052
Hosting Networks (ASNs) where we observed hosted spammed content or spambots 3,545
Number of subdomain reseller accounts reported for hosting spammed content 478,217

Quarterly Update:
Key Statistics
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Top Level Domains
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Registrars
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Hosting Networks
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Key Statistics