The problem is that for whatever reason, Telkom DNS not resolving anything at .worldofwarcraft.com
So, add this line to your windows hosts file, and you can play.
Start, Run (shortcut Win+R):
notepad c:\WINDOWS\system32\drivers\etc\hosts
Then add this line to the bottom:
For EU:
80.239.180.112 eu.logon.worldofwarcraft.com
For US:
12.129.224.116 us.logon.worldofwarcraft.com
Save the file, then wow should be able to logon.
Be sure to undo this once DNS servers are fixed, or WoW may randomly stop being able to logon one day.
EDIT:
Above works fine in XP, but Vista won't let you save the file in notepad, here is the workaround:
- Find notepad on the start menu, right click it, then select "Run as Administrator".
- File, Open: c:\WINDOWS\system32\drivers\etc\hosts
- Add the lines as above for your region
- Save the file
Should work