NCUC is part of the Generic Names Supporting Organisation:

The Generic Names Supporting Organization fashions (and over time, recommends changes to) policies for generic Top-Level Domains (e.g., .com, .org, .biz). The GNSO strives to keep gTLDs operating in a fair, orderly fashion across one global Internet, while promoting innovation and competition. Sample GNSO issues: When you register a domain name, what services must the registrar provide? If you forget to renew your domain name, and it expires, can you get it back? What happens if someone registers a domain name that is confusingly similar to yours? Resources posted here will help you learn more about the GNSO and its policy development process.