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The Top 10 Worst

The World's Worst Spam Support ISPs

Spam continues to plague the internet because a small number of Internet Service Providers knowingly sell service to professional spammers for profit, or do not enough or nothing to prevent spammers operating from their networks.

The ISPs listed on this page knowingly provide service to spam gangs and ignore spam reports from anti-spam systems and internet users. They have been notified of each SBL listing on their network. These ISPs are defacto spam havens where spammers operate unhindered by the ISPs' administrators and executives. In the name of profits, these networks turn a blind eye to blatant spam gangs on their networks.

Although nearly all ISPs claim to be anti-spam, some 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, or that the cost of hiring, training and tooling of a skilled Abuse and Security team is not worth the tradeoff in ISP reputation.

The majority of the world's Internet 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 ISPs 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 31 August 2015 the ISPs with the worst Abuse Departments and consequently the worst reputations for knowingly hosting spam operations are:
1
softlayer.com Number of Current Known Spam Issues: 435

2
unicom-sc Number of Current Known Spam Issues: 105

3
softbank.co.jp Number of Current Known Spam Issues: 91

4
drpeng.com.cn Number of Current Known Spam Issues: 77

5
enzu.com Number of Current Known Spam Issues: 57

6
webexxpurts.com Number of Current Known Spam Issues: 49

7
hostgator.com Number of Current Known Spam Issues: 46

8
triolan.net Number of Current Known Spam Issues: 45

9
esited.com Number of Current Known Spam Issues: 45

10
kyivstar.net Number of Current Known Spam Issues: 43



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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