Anyway, yes, there are 12 public servers for pump.io by E14N, that's good to know.
What bothers me is that identi.ca is timing out/refuses connections quite frequently, which means the hardware is spread among these public servers and cannot be reallocated for identi.ca to make it snappier.
Roman at 2015-08-22T12:35:35Z
“[...] the hardware is spread among these public servers [...]”
Precisely the point of a federated network.
If you see problems with identi.ca, mail email@example.com about it.
(those refused connections are a quite recent problem, btw, not its natural state)