What’s the new Mystery Gift DNS?

Hello! This is for physical hardware, I am playing on a DSi.

Around 1-2 years ago I used the DNS system to get all of the event Pokemon/items on Black, but I am missing some on White 2. I tried the codes that worked previously, but they are no longer working. I have looked at some other ones, but they’re all also not working.

Does anyone have a set list of DNS codes I can try? As well as any tips or tricks that I have to do to get it all to work again?

Thank you!