As this is a promotion that we partner with the .CO registry on, you will need to redeem the code using the form on their website found here:
Simply search for your desired domain name in the search box, click search, complete the form and click 'Get It Now'!
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You will receive a Welcome email shortly after your registration with further instructions. Don't forget to check your spam or junk folder. If you didn't receive your email please contact Customer Support