According to the ITwire, the attack has left many customers unable to access their websites or virtual private servers (VPS) for one or more days earlier this week.
Infosecurity notes that reports are mixed, with different users reporting different problems, but many customers were unable to access their sites or servers over most of Monday of this week, with some problems continuing.
NetRegistry says its engineers have confirmed a DDoS attack has been in progress, with multiple connections swamping a server and eventually taking it offline.
Although most clients had some access restored by 5pm Monday AEST, users on the Telstra network were still experiencing problems, and an ETA on their services being restored is still not available.
According to The Hosting News newswire, the DDoS attacks have caused downtime for Zeus Dynamic, one of NetRegistry’s servers, and quotes the registrar as confirming that “one of the IP addresses used for our shared hosting infrastructure (zeus-dynamic, 18.104.22.168) has been the subject of a DDOS attack.”
“We have had to block this IP with one of our upstream providers (Telstra), in order to allow other client-facing services to be able to be kept online”, the firm's statement added.
The newswire says that NetRegistry has been “working around the clock to stabilize the network.”