I have just signed up to expertflyer, in the hope it might help me find some low-level awards for transatlantic summer travel. For next year.

I put in a test query, and for a particular flight from CDG to ATL, it appears to show 9 economy awards available 331 days out. At least I think that's what it's saying:

code = X, seats = 9

Delta's website certainly doesn't show this flight available, but if I were to phone the Skymiles number, would the reps be able to see these seats ... and let me book some?!