An outage affecting Web hosting firm GoDaddy, which manages millions of websites around the world, was caused by internal problems and not an outside hack, the company said Tuesday.
GoDaddy said the outage affected "many of our customers" for several hours on Monday and that service was fully restored by late in the day.
"The service outage was not caused by external influences," the company said in a statement.
"It was not a 'hack' and it was not a denial of service attack (DDoS). We have determined the service outage was due to a series of internal network events that corrupted router data tables. Once the issues were identified, we took corrective actions to restore services for our customers and GoDaddy.com."
It was not clear how many websites were affected, but some blogs and small business operators said their sites were affected Monday.
Credit was claimed on Twitter by AnonymousOwn3r, identified as the "security leader" of the loosely organized hacker group known as Anonymous.