Our Datacenter engineers noticed that the IP address 216.157.102.xx under your account is receiving huge amount of DDOS attack and the null routed the Ip address to prevent network performance issues. Please note that the attack was affecting entire server and thats why we forced to null route the Ip address. We will continue monitoring this server and reactivate traffic once the attack subsides. Please feel free to reply back to this ticket if you need any further assistance regarding this matter.