Nice list, but it's missing a few. The one I have up on my site at the moment has (I think) 297 zones listed, and it itself is shy at least one ("The Forgotten Halls", shortname fhalls). Of course, mine has a few more non-existent zones than yours (dranikhollowsd through dranikhollowsj, Nektropos, Aviak Village, etc.), plus stuff like Marauder's Mire.
Heck, for all I know, yours has some I'm missing.
If you want to cross-reference, mine can be found at
http://www.gameroom.com/1010101/all_zones.html. (On a side note, right-clicking the link at that page anc try to "save as" doesn't work... The host sucks. Just clicking on it, though, and choosing to save it after the download window pops up works.)
While we're on this subject, anyone got a zone id for fhalls?