Spam-fighting organization KnujOn released it’s annual report on the top-ten domain name registrars sponsoring spam. As noted in the Washington Post:

Nearly 83 percent of all Web sites advertised through spam can be traced back to just 10 domain name registrars.

Those ten domain name registrars, according to KnujOn, are:

1. XinNet Cyber Information Company Limited
2. eNom
3. Network Solutions
4. Register.com
5. Planet Online
6. Regtime Ltd.
7. OnlineNIC Inc.
8. Spot Domain LLC
9. Wild West Domains
10. Hichina Web Solutions

LegitScript is particularly interested in this, because an 80% or 90% of spam tends to hawk pharmaceutical products.