Can one hear the shape of a black hole singularity?

We compute the large overtone quasinormal frequencies $ω_n$ of asymptotically AdS black holes with interior near-singularity Kasner epochs. We show that the Kasner exponents can be extracted cleanly from the large $n$ behaviour of the dispersion $\partial ω_n/\partial k^2$ at $k=0$, where $k$ is a b