by spam volume vanishing,
Comcast retaking the top spot but with only 2 out of the top 10, and colo
FDCservers.net AS 30058 joining in at number ten.
All that and Numbers 2 and 3
didn’t even place last month.
#3 AS 25653 FORTRESSITX jumped up from about a thousand spam messages a day
to more than 200,000 and then back down.
#2 AS 23376 APPSERVE came up from zero on 11 October to more than 225,000,
dropped back briefly to zero on 22 October, and then
resumed at around 65,000 a day.
Both of those cases look suspiciously like single botnet infestations.
Comcast may be making some effort to reduce outbound spam. In July Comcast held 5 out of the top 10 US rankings; in August it held 4, in September it held 3, and in October only 2.
-jsq