These entries are queried from radb.net using whois, you can try my project getting these.
:AS45220 route6: 2001:dd8:2::/48 origin: AS45220 descr: Internet Systems Consortium PO Box 360 mnt-by: MAINT-ISC last-modified: 2020-09-01T06:52:34Z source: APNIC rpki-ov-state: valid route6: 2001:dd8:2::/48 changed: ekb [at] isc.org 20200306 descr: Internet Systems Consortium, Inc. (ISC) mnt-by: MAINT-AS1280 origin: AS45220 remarks: This prefix is used by ISC for management of the F-Root remarks: nameserver and other projects located at KUL1. remarks: Please see http://f.root-servers.org/ for more information. remarks: The server is operated by ISC, http://www.isc.org/. remarks: Trouble reports should be sent to noc [at] isc.org which opens a remarks: ticket. Emergency via telephone, +1 650 423 1310. source: RADB last-modified: 2023-11-13T16:00:09Z rpki-ov-state: valid