NEW YORK (AP) — Thousands and possibly millions of websites hosted by GoDaddy.com went down for several hours on Monday, causing trouble for the mainly small businesses that rely on the service.

A Twitter feed that claimed to be affiliated with the “Anonymous” hacker group said it was behind the outage, but this couldn’t be confirmed. Another Twitter account, known to be associated with Anonymous, suggested the first one was just taking advantage of an outage it had nothing to do with.