This website can generate batches of up to 250,000 unique random codes at a time. Not logged in, it's limited to 1000 codes per batch.
If you own a Random Code Generator account, it can generate an unlimited amount of codes in batches of 250.000 each!
The generated codes can be used as random promotional codes, serial numbers, strong passwords,
sweepstake codes, pincodes, voucher redeem codes and much more.