As detailed in draft-ietf-urnbis-ns-reg-transition, registration templates for URN namespaces for ISSNs [RFC3044] and ISBNs [RFC3187] were updated in the IANA's URN Namespace registry using the updated registration procedure specified in RFC 8141. In order to avoid confusion about which registration templates are current, URNBIS WG has requested to move RFC 3044 and RFC 3187 to Historic.