From Spanking Art
His domain names changed over time. They included wulfram.org, wulfram.nl, wulfram.speed.planet.nl ("ADSL") and wulfram.eu. As of 11/2012, his only active website is wulfram.eu, and it no longer contains any of his old contents.
- Wulfram's (.org address -- defunct)
- Wulfram's (.nl address "site temporarily down")
- Wulfram's (.speed.planet.nl address -- defunct)