Two out of three of Road Runner’s entries got worse, and one, AS11427 SCRR-11427,
popped up from #27 to join the top 10 at #9.
(Windstream) popped up from #45 to #3 with one week’s burst of spam.
dropped out of the top 10, plummetting from more than 5 million spam
messages in November to none observed in the CBL data in December.
Continuum Data Centers’ AS53264 CDC-LMB1 also did well, dropping
from #10 to #57, down from 1.5 million to 0.25 million spam messages.
Yep, it’s Festi for #1 GBLX,
#2 AS 17184 ATL-CBEYOND,
for #3 AS 7018 ATT-INTERNET4,
#8 AS 7385 INTEGRATELECOM
#10 AS 1239 SPRINTLINK.
Congratulations AT&T for making the list!
Well, not really congratulations, since it means you let a lot of
outbound spam out.
However, it’s Lethic for
#4 AS 8047 GCI,
#5 AS 22258 COMCAST-22258,
#6 AS 20115 CHARTER-NET-HKY-NC.
AS 3549 GBLX may have already peaked.
AS 19529 RAZOR-PHL went up like a rocket at the end of the month!
Will they swap ranks next month?
And what’s driving RAZOR-PHL to the top?
Hint: it’s the same as for #9 AS 25653 FORTRESSITX.
How can an ISP both lose and win in top 10 rankings?
By placing more than once!
Comcast got pushed out of first place by AS 46475 LIMESTONENETWORKS
and AS 21788 NOC in the
November 2011 Monthly U.S. SpamRankings.net from CBL volume.
AS 20214 COMCAST-20214 did spam a third less (1,503,173 spam messages)
than last month (2,193,898),
but it was the spontaneous spam spewing of the two top place newcomers
that pushed it down to third place.
Yet Comcast really won the month. It took 4 of the top 10
(places 3, 6, 7, and 10), which is
twice as many as last time, and accounted for 30.29% of top 10 spam
spewed, up from 23.9% last time. That percentage beats either of the
top two this time.