How did Microsoft cause millions of No-IP.com domains to go down?

I know that Microsoft is a big company with lots of capabilities, but how did they take down all of No-IP.com’s domains? From what I’ve read, that wasn’t Microsoft’s intention, and they were trying to combat Windows targeting malware, which is an admirable goal.

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Story added 3. July 2014, content source with full text you can find at link above.