Huh, of all those, ddg seems the odd one. I thought it used its own search service, didn't realise it was bing underneath. Even if that's not entirely true the fact that the home page is down due to the same reason that bing is down doesn't look good.
When the outage started, for me duckduckgo.com just returned no results with the searchbar visible. The ddg homepage was still working. I've been using "my search term !g" for now and ddg just redirects my search to Google, so I don't have to change search provider in browsers.
It's been many hours now. They could have at least added a page saying "We are having an outage" rather than "There was an error displaying the search results. Please try again."
