1. The blocker has the right to block any ball within the opponent's space with his/her hands beyond the net provided that:
This ball, after the first or second contact by the opposing team, is directed towards the blocker’s court and
No player of the opposing team is close enough to the net in that part of the playing space to continue his/her action.
However, if a player of the opposing team is near the ball, which is completely on his side of the net, and about to play it, the block touch beyond the net is a fault if the blocker contacts the ball before the player's action, thus having prevented the opponent’s action.
2. Sets and allowable passes (not attacks) which do not cross the net towards the opponent’s court may not be blocked beyond the net except after the third contact.
3. If one of the blockers puts his/her hands over the net and hits the ball (spike) instead of making a blocking action, it is a fault (the expression "beyond the net" means reaching the hands over the net into the opponent's space). The spike action is characterized by a back swing, whereas the block does not.
4. Since the ball may touch any part of the body, if during the block the ball touches the feet during the same action it is not a fault and it is still a block!