pretty much all of them still being manufactured have IVS, it'll be listed in spec sheet.. im not maintaining a list of all cameras, they have a website for that.
be weary, if you cant find the model number on an english Dahua site then your likely getting a hacked Chinese Domestic model camera made of plastics and cant be updated w/OEM firmware w/out reverting to Chinese.. Most of the cheap units you find will be weak plastic china-only models hacked and resold on international market.. inside china they have cut corners to compete.
International Models are the best deal and highest quality