  The lattice studies in QCD demonstrate the nontrivial localization behavior
of the eigenmodes of the 4D Euclidean Dirac operator considered as Hamiltonian
of $4+1$ dimensional disordered system. We use the holographic viewpoint to
provide the conjectural explanation of these properties. The delocalization of
all modes in the confined phase is related to the $\theta=\pi$ - like phenomena
when the domain walls between degenerated vacua are possible. It is conjectured
that the localized modes separated by mobility edge from the rest of the
spectrum in deconfined QCD correspond to the near-horizon region in the
holographic dual.
