The offer for the free Neustar domain registration can be redeemed at https://www.startupweekend.neustar/. This code is only applicable once per participant, and will only be active until the first Thursday following your event. A list of FAQ's associated with the .CO offer can be found here: http://www.go.co/startupweekend/faq/. Reach out to support@porkbun.com with any questions.