It was stated at this forum that the 7-men-endgames are still not available online.
What about the special endgame KRPPKRP (Rook and 2 pawns against Rook and 1 pawn) ?
It would be nice if the database covers also DTC or DTZ, ideally both.
There exists a 7-men-endgames tablebase available online, the "Lomonosov endgame tablebase". see : http://chessok.com/?page_id=27966
Unfortunately, it is not free yet.