There are some domains that seem to be stuck in limbo. I suspect that there is nothing sinister about it, and they are simply stuck/forgotten.
hke.com dropped recently, but expired back in 1999, I think.
For some reason the daemon that trawls the registry misses them. You could try phoning the registrar and they might be able to force it to drop.
With tens of millions of records in the registry, it's not suprising that some are a bit odd.
There were some funny ones too, like spaced.com which for a while said it was created in 1969
violinbow.com is another good one