These entries are queried from radb.net using whois, you can try my project getting these.
:AS52456 route: 201.220.30.0/23 descr: NETBLCK-EPM origin: AS52456 mnt-by: UNE-MGR changed: admorbitel [at] une.com.co 20130716 #16:10:20Z source: RADB last-modified: 2023-11-13T15:50:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2801:1c:8000::/48 descr: NETBLCK-EPM origin: AS52456 mnt-by: UNE-MGR changed: admorbitel [at] une.com.co 20130716 #16:11:30Z source: RADB last-modified: 2023-11-13T15:50:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2801:160::/40 descr: NETBLK-EPM origin: AS52456 mnt-by: UNE-MGR changed: admorbitel [at] une.com.co 20130730 #14:49:17Z source: RADB last-modified: 2023-11-13T15:50:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source