The D in DDOS stands for "Distributed"
Just found it extremely funny that you replied three times with the same subject line. Thought I'd "distribute" your own personal DDOS attack. :D
But if you can ping through the "downtime" window, I'd say DNS is definitely the route to pursue.
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A stupid despot may constrain his slaves with iron chains; but a true politician binds them even more strongly by the chain of their own ideas;...despair and time eat away the bonds of iron and steel, but they are powerless against the habitual union of ideas, they can only tighten it still more; and on the soft fibres of the brain is founded the unshakable base of the soundest of Empires."
Jacques Servan, 1767