The attacks targeted at the company's WorldNIC name servers and resulted in a service degradation for about 25 minutes before the server was restored to normal, a company spokeswoman says.

Also, late last month, Joker.com, a domain-name registrar in Germany, was hit with a similar DDoS that disrupted service to customers.

In an advisory posted on its site, Joker said that 'massive' attacks against its DNS servers had affected the DNS resolution of Joker.com as well as domains belonging to its customers.

Beyond apologizing to customers, the company offered no other details on the attack except to say that it was 'working hard' to find a permanent solution to the problem.

Network Solutions also declined to comment on how it was mitigating the attack.