Spam Activity: Key Statistics
March 1,2023 - May 31,2023

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 1,548,190
Total number of spam records produced from spam reports 1,213,448
Unique domain names reported for hosting spammed content or spambots 1,093,054
Top-level Domains (TLDs) with domain names reported for hosting spammed content or spambots 687
Registrars (by distinct IANA ID) that had gTLD domains under management reported for hosting spammed content or spambots 2,303
Registrars (by distinct name) that had domains under management reported for hosting spammed content or spambots 3,274
Hosting Networks (ASNs) where we observed hosted spammed content or spambots 4,803
Number of subdomain reseller accounts reported for hosting spammed content 45,768

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