They most emphatically will NOT accept any TECEP exams that are not listed. Yes, I found out the hard way.
Another thing I noticed is that while COSC claims to give letter grades for DANTES exams, they do not list the current cut scores for A-B-and C anywhere that I can find. I wonder if they are the same as Excelsior's. But yeah on their list they do not accept TECEPS except for that one or 2 maybe, however they do seem to accept most of the rest...