Receiving partner credit outside eligible flight range on DL/NW
I recently flew on DL 4128 MEM-LIT, which is a codeshare operated by NW 7205. Both flight numbers are outside the eligible flight numbers range listed on alaskaair.com for both NW and DL. But my account was credited 1000 mi AND I received 500 EQM, even though it's a 130 mi flight (which is consistent with NW/DL's minimum EQM policy). That's great news and I'm not complaining, but I am trying to plan some other flights on DL/NW and I want to ensure I receive AS credit. Does anybody know what DL & NW flight numbers are actually eligible for credit on AS now?
BTW, I bought the ticket from DL and it's credited to my account as DL 4128.