Wtfnix.i2p is hosted on multiple i2p routers ( aka multihomed ). This is cool for availability and load balancing.
The downside however is that anyone hosting wtfnix.i2p ( via the secret key ) can only access the local service.
For those operators mirroring, wtfnix.i2p can be fetched from a single source via this link
A tarball of the complete site is available here