What was the first mmorpg

Pretty sure the original NeverWinter Nights was up and running in 1991. But I've also heard rumors of other online dungeon games before then, so the first Massive Multiplayer Online Game I don't really know. But I can tell you it wasn't published by NEXON in 1996.

No actually I got done my research cause ill be giveing a mmo history review soon the very first mmo is ultima online never winter nights was a little later then it.