The IESG has received a request from an individual submitter to consider the following document: - 'Using National Bibliography Numbers as Uniform Resource Names' <draft-hakala-urn-nbn-rfc3188bis-00.txt> as Informational RFC The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2018-05-21. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract National Bibliography Numbers, NBNs, are used by the national libraries and other organizations in order to identify resources in their collections. Generally, NBNs are applied to resources that are not catered for by established (standard) identifier systems such as ISBN. A URN (Uniform Resource Names) namespace for NBNs was established in 2001 in RFC 3188. Since then, several European national libraries have implemented URN:NBN-based systems. This document replaces RFC 3188 and defines how NBNs can be supported within the updated URN framework. A revised namespace registration (version 4) compliant to RFC 8141 is included. The file can be obtained via https://datatracker.ietf.org/doc/draft-hakala-urn-nbn-rfc3188bis/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-hakala-urn-nbn-rfc3188bis/ballot/ No IPR declarations have been submitted directly on this I-D.