Hello, I have reviewed this document as part of the Operational directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the operational area directors. Document editors and WG chairs should treat these comments just like any other last call comments. Assessment: this looks ready to go, with one suggestion, below. The text, and the datatracker history, suggest this is a straightforward registration of what's largely a proprietary namespace, in support of interoperability among HBBTV participants and the larger internet. From a quick reading of RFC 3406, I think this looks completely consistent with the purpose of the registry. From an ops perspective, imagining I might see an hbbtv URN in the wild, I think the draft answers the key questions I'd have, namely whether this URN space is published and reserved, format rules, and where to go for more information about how to validate or use such URNs. The only gap I can see against the RFC 3406 criteria is in the "Community Considerations" section, which RFC 3406 suggests should describe whether the registry is open or closed. The document is clear that the HBBTV Association is the registration authority, but doesn't say whether only HBBTV members can participate in developing/publishing specifications that define entries in this registry, or there's a process for non-members to do so, i.e. that these URNs could be legitimately in use outside of the HBBTV Association's specifications. It's implied elsewhere that these URNs will be included only in specifications developed within the HBBTV association, but as a possibly-curious operator of internet services, I'd appreciate a sentence or two more about how open the process might be. The requested registry entry just seems to be the open documentation that this namespace exists and where to go to find out more about how particular URNs in it might be used. This promotes interoperability and should make operators' lives slightly easier for being available. thanks, Suzanne