They are in your WoW folder, in the Interface section/data.
logon.admins-world.com i think :P
if its US its : Set Realmlist: us.logon.worldofwarcraft.com if its EU its : Set Realmlist: eu.logon.worldofwarcraft.com
Open up realmlist Set Realmlist us.logon.worldofwarcraft.com save, good to go
According to achievement logs, it would be the 22nd of November, 2004.
To find the realmlist go to the \Data\enUS directory in your world of warcraft folder and click on the realmlist.wtf file. That is where the realmlist is at, although modifying this without knowing what you are doing can be bad. There really is no reason to touch this file without being told so by a Blizzard tech support person.
You need to open up your realmlist in your world of warcraft folder and replace all the information to "set realmlist us.logon.worldofwarcraft.com" save it and then restart wow.
The 5.0.4 patch for World of Warcraft hit the live servers on Tuesday, August 28th, 2012.
It differs depending on which continent you are playing on. For instance, In Europe the realmlist would be: "eu.logon.worldofwarcraft.com" And in US: "us.logon.worldofwarcraft.com"
The realmlist is a text document in the game folder than contains the information necessary for the game to contact the servers.
logon.shadowcrown.org
For the US client it is:set realmlist us.logon.worldofwarcraft.comset patchlist us.version.worldofwarcraft.comset realmlistbn ""set portal usFor the EU client it is:set realmlist eu.logon.worldofwarcraft.comset patchlist eu.version.worldofwarcraft.comset realmlistbn ""set portal eu
realm.wowblitz2.comEnjoy.