by request, added the zones an NPC can spawn in to the NPC popup. It will show up to 3 zones, in no particular order, and if there are more than that it will show a [view more] type link. You can see what that will look like by hovering over the mob named "Trigger" here:

http://mqemulator.net/zone.php?name=qey2hh1&view=npcs

After the zone name there is a multiplier that represents how many spawn points that NPC has in the zone. So a rat in Qeynos that has 10 possible spawn points would show up as:

Qeynos x10

Presently the link will send you to the info on the zone, not to info about the spawn locations. If you want spawn location data you can click the egg icon on the popup. The view more link brings you to that same page.