Does anyone know a source to find out who AS has interline baggage agreements with? I did some searching through old threads, and could never find a good source.

So...my specific question is: I have a flight coming up on a combination of Aeromexico, Delta, and Alaska. Booked on 3 separate itins (layovers up to but do not exceed 4 hours). When checking in on Aeromexico, will they be able to check my bags all the way through, or should I pick up my bags in Mexico City and check them in on Delta all the way through?