GoDaddy.com, the largest domain name registrar on the Web, has been taken offline, and a self-proclaimed member of the Anonymous hacktivism collective is taking responsibility.

The administrators of GoDaddy confirmed on Monday that they were suffering from technical issues, which the website TechCrunch reports to be impacting a multitude of websites and their affiliated email accounts that are hosted through the service. Although the company has not discussed the specifics yet, a self-described member of Anonymous says that he or she is responsible, a claim that has not been verified yet.

On Twitter, user @AnonymousOwn3r writes, “the attack is not coming from Anonymous coletive [sic] , the attack it’s coming only from me” and that the the action is being carried out “to test how the cyber security is safe and for more reasons that i can not talk now.”

GoDaddy has tweeted, “We’re aware of the trouble people are having with our site. We’re working on it.”

On Friday, it was reported that the White House is preparing to roll out an cyber security Executive Order that will serve as a surrogate until Congress can come to agreement on a bipartisan legislation to protect America’s computer infrastructure.

Earlier this year, GoDaddy announced that they would be supporting the Stop Online Piracy Act, or SOPA, a controversial legislation that if approved would have greatly changed the US government’s ability to monitor the Internet. The company eventually reversed their stance, but not before a massive protest resulted in many of their clients switching to other domain registrars. The boycott reportedly ended with thousands of GoDaddy’s millions of customers, including Wikipedia, cancelling their accounts.

Founded in 1997, Arizona-based GoDaddy.com is used by millions of customers worldwide, including a large number of small businesses. At 4 p.m. EST, GoDaddy tweeted, “Update: Still working on it, but we’re making progress. Some service has already been restored. Stick with us.”

Other social media accounts affiliated with Anonymous have not confirmed the validity of the alleged culprit’s claim and have largely distanced themselves from the hack. GoDaddy’s 24-hour tech support telephone line has also been inaccessible during the duration of the outage.