These entries are queried from radb.net using whois, you can try my project getting these.
:AS13553 route: 62.108.128.0/19 descr: Adapt route origin: AS13553 mnt-by: MAINT-AS14492 changed: hostmaster [at] datapipe.com 20161202 #14:37:32Z source: RADB last-modified: 2023-11-13T15:50:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 62.108.128.0/19 descr: CNET-EU origin: AS13553 mnt-by: MNT-CNET created: 2014-09-09T15:18:26Z last-modified: 2014-09-09T15:18:26Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 62.108.136.0/22 descr: Adapt route origin: AS13553 mnt-by: MAINT-AS14492 changed: hostmaster [at] datapipe.com 20161202 #14:49:15Z source: RADB last-modified: 2023-11-13T15:50:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 62.108.136.0/22 descr: CNET-UK origin: AS13553 mnt-by: MNT-CNET created: 2014-09-09T15:20:02Z last-modified: 2014-09-09T15:20:02Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 212.187.242.0/24 descr: Route to CNET admin-c: CP4082-RIPE tech-c: LTHM origin: AS13553 mnt-by: CNET-MNT changed: matthew.duncalf [at] level3.com 20020214 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source