Interesting. I looked it up and found this, so it looks like it’s some hybrid of many sources:
Most of our search result pages feature one or more Instant Answers. To deliver Instant Answers on specific topics, DuckDuckGo leverages many sources, including specialized sources like Sportradar and crowd-sourced sites like Wikipedia. We also maintain our own crawler (DuckDuckBot) and many indexes to support our results. Of course, we have more traditional links and images in our search results too, which we largely source from Bing. Our focus is synthesizing all these sources to create a superior search experience.
DDG is just a front-end for Bing. There are very few search engines that actually do their own indexing.
Interesting. I looked it up and found this, so it looks like it’s some hybrid of many sources:
Well I noticed a difference between duckduckgo and Ecosia, both taking results from Bing. Not sure if it’s the language setting, or something else.