Is it possible to register new domains or transfer-in existing domains, with/to deSEC?
welcome to deSEC, and thank you for the praise.
deSEC does not sell domains. Whereever you bought your domain, you would need to go there and tell them that you want deSEC to be responsible for hosting the DNS of your domain. After creating a the domain in your deSEC login area, our website will provide you with detailed instructions on how to do that.