The Worst Hosting Networks (for Spam)

Spammers have long used ISP networks to send spam, taking ownership of PCs and mobile devices and using them to send spam. But in recent years, defenses against this type of spamming have improved remarkably, making this type of spamming much less effective and profitable.

Not to be deterred, spammers have increased their focus on hosting providers, who offer powerful virtual private servers (VPS’es) not to mention compromise-able hosting accounts on large shared hosting machines. VPS boxes are easily obtained using stolen credit cards, and shared hosting accounts are easily compromised by guessing the password or via phishing attacks and other client compromises.

So, which hosting networks are the world’s greatest sources of spam? Here are the latest figures as determined by our research using publicly available data from the Composite Blocking List (CBL):

NameCountryVolumeMessages per Machine

1

CAT TelecomThailand5.98,499

2

1&1 InternetGermany5.670,930

3

IBM SoftlayerUSA4.57,120

4

Rackspace Hosting

USA2.717,172

5

Host Dime, Inc.USA2.68,869

6

Hetzner Online AG

Germany2.22,835

7

ThaicomThailand2.158,972

8

Webfusion Internet Solutions

UK1.934,946

9

Vietnam Post and Telegraph

Vietnam1.95,249

10

Sadece Hosting

Turkey1.728,561

11

LeaseWebNetherlands1.63,300

12

Simply Transit Ltd.

UK1.415,915

13

IX Web HostingUSA1.341,309

14

GigeNET, LLCUSA1.339,144

15

Strato AGGermany1.323,930

16

Dualtec Informática S.A.

Brazil1.2551,105

17

JaguarPCUSA1.232,282

18

TransIPNetherlands1.140,439

19

Peer1Canada1.1978

20

Telia SoneraSweden1.1747

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