  We investigate the localization behavior of vibrational modes of infinite
percolation clusters above the critical concentration in two and three
dimensions using the method of level statistics. We find that all eigenstates
are localized in d=2, including the low frequency phonon states. In d=3 we
obtain evidence for a localization-delocalization transition. But contrary to
the common view this transition occurs for frequencies above the phonon fracton
crossover giving rise to a new regime of extended fracton states.
