A967 =Altador T673 =Terror Mountain M547 =Meridell M823 =Mystery Island F213 =Faerie land K563 =Krawk Island S246 =Shenkuu H483 =Haunted woods S794 =Space station L392 =Lost desert N176 =Neopia central T415 =Tyrannia
Take your time entering the codes so you don't get to many of the same items. The backgrounds are completely different from the one's collected from the American codes.
If you're not in North America you can change your country code and it will work.
Confirmed: The pant devil can steal 'no trade' items.
In case anyone is nervous about this, as I was, there have been numerous people who sent in questions to TNT about whether using these is allowed. The answers have been yes, for all countries (you're allowed to change your country to redeem). Screenies of the TNT neomails are currently on: