Network Solutions is a domain name registrar that manages over 6.6 million domains. As of July 16, 2013, the Network Solutions website is under a Distributed Denial of Service (DDoS) attack. In a previous outage, domain name servers were redirected away from their proper IP addresses. It is possible that the DDoS attacks are related to a previous DDoS attack. Customers that were compromised previously may not be able to repair their domain name infrastructure until the attack is mitigated.”]
Source: https://blogs.cisco.com/security/network-solutions-customer-site-compromises-and-ddos