These entries are queried from radb.net using whois, you can try my project getting these.
:AS26068 route: 66.146.192.0/19 descr: OSH-BLK-A1 origin: AS26068 remarks: send abuse reports to abuse [at] onshore.com notify: iproute [at] onshore.com mnt-by: MAINT-ONSH-NOC changed: stevek [at] onshore.com 20021120 changed: stevek [at] onshore.com 20031105 #22:33:28(UTC) source: RADB last-modified: 2023-11-13T16:11:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.251.224.0/19 descr: ONSH-NET-2 origin: AS26068 notify: iproute [at] onshore.com mnt-by: MAINT-ONSH-NOC changed: stevek [at] onshore.com 20060616 #22:51:47(UTC) changed: stevek [at] onshore.com 20080630 #17:29:45Z source: RADB last-modified: 2023-11-13T16:11:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.251.224.0/20 origin: AS26068 descr: NET-BLK-2-sub notify: iproute [at] onshore.com mnt-by: MAINT-ONSH-NOC changed: iproute [at] onshore.com 20231026 #16:48:31Z source: RADB last-modified: 2023-11-13T16:19:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.251.224.0/22 origin: AS26068 descr: onShore Security mnt-by: MAINT-ONSH-NOC changed: iproute [at] onshore.com 20220718 #19:13:36Z source: RADB last-modified: 2023-11-13T16:11:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.251.240.0/20 origin: AS26068 descr: NET-BLK2-suba notify: iproute [at] onshore.com mnt-by: MAINT-ONSH-NOC changed: iproute [at] onshore.com 20231026 #16:50:00Z source: RADB last-modified: 2023-11-13T16:19:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source