Hello guys. Seems like you never switched over to our DNS despite numerous notifications we have sent you during the past year or so. We have retired old IP addresses abruptly because our DDOS mitigation provider Staminus have recently been hacked and had a massive outage, more details here: https://www.google.co.uk/ ... h?q=staminus+hacked.
Please switch over to our DNS so we can control the IP address. Your domain name will be turned off automatically, but to speed things up please email our support team with your website address at email@example.com. Then you can re-enable your domain but using our DNS.
When this is done we have full control over the IP address your website is pointing to, and therefore can keep it online when we perform network upgrades.