Spam Activity: Key Statistics
Quarter over Quarter comparison: 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.

A comparison of key statistics for the periods September 1, 2023 - November 30, 2023 and December 1,2023 - February 29,2024 appears in the table below.

Measurement September to November 2023 December to February 2024 Change
in
Measurement
Total number of spam reports collected from feeds (per quarter) 1,456,102 1,559,299 103,197
Total number of spam records produced from spam reports 1,204,600 1,358,366 153,766
Unique domain names reported for hosting spammed content or spambots 803,643 649,472 -154,171
Top-level Domains (TLDs) with domain names reported for hosting spammed content or spambots 674 631 -43
Registrars (by distinct IANA ID) that had gTLD domains under management reported for hosting spammed content or spambots 2,152 2,219 67
Registrars (by distinct name) that had domains under management reported for hosting spammed content or spambots 2,953 3,052 99
Hosting Networks (ASNs) where we observed hosted spammed content or spambots 3,931 3,545 -386
Number of subdomain reseller accounts reported for hosting spammed content 32,531 478,217 445,686

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