http://tth4he7kdfmfwq2k7yaj2ggjdva7rdpbch42q6xgoorbabjeklyfbmyd.onion/dark-fail-useful-verified-list-of-tor-hidden-services
After the TOR v3 transition in mid-2020, dark.fail was one of the first hidden service directories to list v3 links. So, users were protected from v2-based attacks, such as enumeration and location-prediction where relays had the power to detail and block services.