The IESG has approved the following document: - 'Using National Bibliography Numbers as Uniform Resource Names' (draft-hakala-urn-nbn-rfc3188bis-02.txt) as Informational RFC This document has been reviewed in the IETF but is not the product of an IETF Working Group. The IESG contact person is Alexey Melnikov. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-hakala-urn-nbn-rfc3188bis/ Technical Summary This specification updates the URN namespace registration for National Bibliography Numbers (NBNs), which are used intensively by several European national libraries. The primary change from RFC 3188 is the addition of support for URN q-components and f-components as specified in RFC 8141, the updated definition of URNs. Working Group Summary This specification was slated to be completed by the URNBIS Working Group but was decoupled from WG deliverables because of changes made to the URN namespace registration process between RFC 3406 and RFC 8141 (i.e., IETF consensus is no longer required for registration of formal namespaces, only Expert Review). However, publication of this document as an RFC will ensure that the updated definition of NBN URNs is available in a stable specification that obsoletes RFC 3188. Document Quality As noted, several national libraries in Europe have implemented systems that support the NBN namespace and have generated millions of URNs in the namespace. This specification accurately documents the syntax and management of the NBN namespace. Personnel The Document Shepherd is Peter Saint-Andre (co-author of RFC 8141). The Responsible Area Director is Alexey Melnikov.