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The Top 10 Worst
Spammers


The World's Worst ISPs

The networks listed on this page knowingly provide service to criminal spam gangs and ignore spam reports from anti-spam systems and Internet users. These networks are defacto Spam Havens from where spammers operate freely and with the full knowledge of the network administrators and the executives. In the name of profits, these ten networks turn a blind eye to criminal spam gangs on their networks.

Spam continues to plague the Internet because a small number of large Internet Service Providers sell service knowingly to professional spammers for profit, or do nothing to prevent spammers operating from their networks.

Although all networks claim to be anti-spam, some network executives factor revenue made from hosting known spam gangs into corporate policy decisions to continue to sell services to spam operations. Others simply decide that closing the holes in their end-user broadband systems that allow spammers access would be too costly to their bottom lines.

The majority of the world's service providers succeed in keeping spammers off their networks and work to maintain a positive anti-spam reputation, but their work is undermined daily by the few networks such as these who, out of corporate greed or mismanagement, choose to be part of the problem.


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The World's Worst Spam Support ISPs
As of 20 August 2014 the ISPs with the worst Abuse Departments and consequently the worst reputations for knowingly hosting illegal spam operations are:
1
softbank.co.jp Number of Current Known Spam Issues: 70

2
chinanet-fj Number of Current Known Spam Issues: 65

3
chinanet-hb Number of Current Known Spam Issues: 64

4
hostnoc.net Number of Current Known Spam Issues: 63

5
unicom-bj Number of Current Known Spam Issues: 57

6
ovh.net Number of Current Known Spam Issues: 54

7
unifiedlayer.com Number of Current Known Spam Issues: 45

8
chinanet-gz Number of Current Known Spam Issues: 39

9
dti.ad.jp Number of Current Known Spam Issues: 39

10
jet.ne.jp Number of Current Known Spam Issues: 39



Source: Spamhaus Blocklist (SBL) database. Data is compiled automatically every 24 hours from the SBL database and sorted by the number of currently listed SBL records for each network (ISP/NSP). The source data, including record information on each spam issue listed can be viewed by clicking on the Number of Known Spam Issues links.
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