The name changed during the war, so it would be impossible to answer it with a single designation.
The Wa.
Prüf. 6 final designation was Pz.Kpfw. Tiger Ausf. B
The In. 6 designation was Pz.Kpfw. Tiger (8,8cm Kw.K. L/71) (Sd.Kfz. 182)
Tiger II, Tiger 2, Tiger III, Tiger 3, VK 45.02 (H), Henschel Tiger B and VK 45.03 are also designations which were used throughout the war.
Pz.Kpfw. Tiger Ausf. B or Tiger II woul dbe the most logical names to use...