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):

Name Country Volume Messages per Machine

1

CAT Telecom Thailand 5.9 8,499

2

1&1 Internet Germany 5.6 70,930

3

IBM Softlayer USA 4.5 7,120

4

Rackspace Hosting

USA 2.7 17,172

5

Host Dime, Inc. USA 2.6 8,869

6

Hetzner Online AG

Germany 2.2 2,835

7

Thaicom Thailand 2.1 58,972

8

Webfusion Internet Solutions

UK 1.9 34,946

9

Vietnam Post and Telegraph

Vietnam 1.9 5,249

10

Sadece Hosting

Turkey 1.7 28,561

11

LeaseWeb Netherlands 1.6 3,300

12

Simply Transit Ltd.

UK 1.4 15,915

13

IX Web Hosting USA 1.3 41,309

14

GigeNET, LLC USA 1.3 39,144

15

Strato AG Germany 1.3 23,930

16

Dualtec Informática S.A.

Brazil 1.2 551,105

17

JaguarPC USA 1.2 32,282

18

TransIP Netherlands 1.1 40,439

19

Peer1 Canada 1.1 978

20

Telia Sonera Sweden 1.1 747

Top Spamming Hosting Providers

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