Zerofail’s AS 40191 AS-PRE2POST-1
jumped from 5 per day April 1st to
more than a million spam messages many days in April, and from
413 total in March to almost 22 million in April.
That made it
#2 in the April 2013
for
Canada from CBL data,
and Zerofail kept
second place in May with
more than 18 million spam messages.
This AS actually sent proportionally more of top 10 spam from Canada
in May than in April because #1 iWeb’s AS 32613 sent a lot less in May.
Where does all this Zerofail spam come from?
AS 40191 has six netblocks currently assigned, of which
the netblock 173.246.64.0/19 is producing almost all of the
spam seen from AS 40191.
-jsq