Not that it actually matters, but I've had 18.104.22.168/19 blocked in a client's htaccess for well over 2 years and my note says it was registered 03/2011. I've often seen the original registration date changed when the info is updated.
FWIW - whois.domaintools.com also says AS33387 DATASHACK - DataShack, LC (registered Mar 18, 2011)
keyplyr, are you positive your notes aren't attached to some type of time machine? I've still got huge slabs of 107 labeled bogon, including most of 144-191 with isolated holes. (Almost all of the holes are block-on-sight server farms. Figures.)