All working codes, claim it while you can 
Permanent Borderlands Shift codes
Codes Redeems Games
ZFKJ3-TT3BB-JTBJT-T3JJT-JWX9H 3 Golden keys Borderlands 2 & 3
HXKBT-XJ6FR-WBRKJ-J3TTB-RSBHR Diamond Loot Chest Golden Key Borderlands 3
ZFKJ3-TT6FF-KTFKT-T3JJT-JWX36 Diamond Loot Chest Golden Key Borderlands 3
Z65B3-JCXX6-5JXW3-3B33J-9SWT6 Diamond Loot Chest Golden Key Borderlands 3
9XCBT-WBXFR-5TRWJ-JJJ33-TX53Z Diamond Loot Chest Golden Key Borderlands 3
ZRWBJ-ST6XR-CBFKT-JT3J3-FRXJ5 Diamond Loot Chest Golden Key Borderlands 3
Limited TIme Shift codes
Codes Redeem Games Expires
CSWBT-WZK6H-5X56Z-R3JJJ-CXBKR 3 Golden keys Borderlands 3 Nov 23rd at 10am
K3KBT-SB93Z-JBFTZ-3JBTB-TRCTZ 5 Golden Keys Borderlands 2 DEC 7th 1:00AM
C3K3T-R3HBH-BTRJZ-33JTB-JT9F9 5 Golden Keys Borderlands 2 DEC 7th 1:00AM