"The top spam network, with 41 known spam issues, is
sistemnet.com.tr, based in Turkey. Runner-up is HostFresh, Inc.,
out of San Francisco, with 34 known spam problems. Getting the
bronze in place of Google, which had been "credited" with 31 spam
problems on its network, is VSNL International, a subsidiary of the
Tata Group, an Indian holding company. You can see the rest of the
wannabes on the list here."