- DNS mirror from MvA Internet Services GmbH Effretikon, Switzerland
- Swinog (Swiss Network Operator Group) for their whitelist data.
- Rediris.es (Spanish Abuse Forum) for contributing their whitelist data.
- Arboris, ISP from Wiltshire, England, contributes their whitelist of UK and other businesses and organisations.
…and the many organisations and individuals who provide us with feedback and data.