Another major white supremacist website, The Daily Stormer, was previously been shut down by the web-hosting company Go Daddy and then Google after the violence in Charlottesville.
The Lawyers' Committee for Civil Rights Under Law said the stormfront.org shutdown followed complaints it filed with Network Solutions alleging the site promotes not only hate speech, but deadly violence.
A spokesman for Network Solutions didn't immediately return an email seeking comment.
Users of Black's website have been implicated in more than 100 murders, according to the complaint, including 77 people slain by neo-Nazi Anders Breivik at a camp in Norway in 2011.
"Especially in the wake of tragic events in Charlottesville and the spike in hate crimes across the country, Stormfront crossed the line of permissible speech and incited and promoted violence," said a statement by Kristen Clarke, executive director of the Lawyers' Committee for Civil Rights Under Law.