Gearbox Software has delivered two sets of SHiFT codes for Borderlands 2 on all of the assorted consoles. These codes should be good for about three hours, and Gearbox is promising more at around 3 PM CT.
PC/Mac: CB53T-R99X5-5XTJJ-BB3JB-BWTKR
Xbox 360: WTCBB-JBH59-FHX3R-KXJJ3-T9XW5
PlayStation 3: C3CJT-KWCZK-BCCC3-HB5JJ-SBHW9
PC/Mac: 5TW3T-S3BHW-56TTJ-TTJJJ-96HTT
PlayStation 3: 5T5BB-R6CZC-JK55T-S3KJT-W6F5C
Xbox 360: 5J5T3-CKZKS-FZX36-56TBT-XK6KW
If you're not familiar with SHiFT codes and how to redeem them, you can find out more about them here. They give players access to Golden Keys to open special chests in Borderlands 2, and they can be redeemed by multiple players as long as the codes are active. Typically the codes remain active for three hours once they are posted.