I wouldn't get too excited about these sites. For example, A is everything in first class except F which is a straight paid first class ticket. Thus an A may be available for mileage upgrade, premium award ticket, elite upgrade, RTW and on and on. In other words, A is split into many smaller buckets. You may fit, you may not. So don't get all excited because you see A9.
Some airline web sites are quite good at showing what award seats are available. NW, AA UA, and BA come to mind, I'm sure there are others.