Spam Activity: Key Statistics
Quarter over Quarter comparison: June 1,2023 - August 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.

A comparison of key statistics for the periods May 1, 2023 - July 31, 2023 and June 1,2023 - August 31,2023 appears in the table below.

Measurement March to May 2023 June to August 2023 Change
in
Measurement
Total number of spam reports collected from feeds (per quarter) 1,548,190 1,349,022 -199,168
Total number of spam records produced from spam reports 1,213,448 1,161,409 -52,039
Unique domain names reported for hosting spammed content or spambots 1,093,054 851,522 -241,532
Top-level Domains (TLDs) with domain names reported for hosting spammed content or spambots 687 690 3
Registrars (by distinct IANA ID) that had gTLD domains under management reported for hosting spammed content or spambots 2,303 2,239 -64
Registrars (by distinct name) that had domains under management reported for hosting spammed content or spambots 3,274 3,018 -256
Hosting Networks (ASNs) where we observed hosted spammed content or spambots 4,803 3,832 -971
Number of subdomain reseller accounts reported for hosting spammed content 45,768 29,598 -16,170

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