Yesterday my host department hosting account was having server downtime, and the website is not available. I have to contact host department support to inform them, and get them to fix this issue. I choose to use the host department live chat support, as this is the quickest method.
My host department hosting account was having some problem, and experiencing service downtime for few hours! Host department support told me it was caused by IP address changes at their server, and this service downtime will last for another 6-24 hours, as have to wait for propagation. 
Welcome to HOST DEPARTMENT.COM Live chat. An online representative will be with you shortly. You are number 1 in the queue.
You are now chatting with ‘David Adams’
charles: hi david
David Adams: Hello! Welcome to Host Department’s LiveChat.How may I help you?
charles: my website had been down for hours… domain http://www.hostdepartmentreview.org/
charles: error msg… The operation timed out when attempting to contact www.hostdepartmentreview.org.
David Adams: Let me check it, please wait Sir.
charles: any luck??
David Adams: Thank you for waiting, i’ve check it and we have shared ip migration before. I’ve fix it. You may check it again in about 6-24 hours for propagation time.
charles: ok.