Confirmed not found here as well using DuckDuckGo.
Neither does Lycos.
Nor Bing.
Looks like DuckDuckGo and Lycos are using Bing indices.
Google, Swisscows, Presearch and Yandex find it OK.
I use Yandex quite a lot as it returns results like Google did in its early unbiased years.
I think this may be a transient error.