These entries are queried from radb.net using whois, you can try my project getting these.
:AS13597 route: 216.41.238.0/23 descr: Creative Mobile Solutions origin: AS13597 mnt-by: MNT-CMS-503 changed: mike [at] cmsi.tv 20190906 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.41.238.0/24 descr: Creative Mobile Solutions origin: AS13597 mnt-by: MNT-CMS-503 changed: mike [at] cmsi.tv 20190906 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.41.239.0/24 descr: Creative Mobile Solutions origin: AS13597 mnt-by: MNT-CMS-503 changed: mike [at] cmsi.tv 20190906 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.133.170.0/23 descr: OnLine Exchange =09 origin: AS13597 remarks: Object registered by New edge for Transit notify: bgpadmin [at] newedgenetworks.com mnt-by: NEWEDGENETS-MNT changed: bgpadmin [at] newedgenetworks.com 20050727 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.133.170.0/24 descr: Online Exchange origin: AS13597 remarks: Object registered by New Edge for Transit notify: bgpadmin [at] newedgenetsworks.com mnt-by: NEWEDGENETS-MNT changed: bgpadmin [at] newedgenetworks.com 20050622 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.133.171.0/24 descr: Online Exchange origin: AS13597 remarks: Object registered by New Edge for Transit notify: bgpadmin [at] newedgenetsworks.com mnt-by: NEWEDGENETS-MNT changed: bgpadmin [at] newedgenetworks.com 20050718 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source