These entries are queried from radb.net using whois, you can try my project getting these.
:AS40956 route: 137.83.77.0/24 descr: ADDED FOR - AS40956 origin: AS40956 notify: noc [at] 123.net mnt-by: I123-MNT changed: rpd [at] 123.net 20200305 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 137.83.77.0/24 descr: RR-RC-NORTHWOOD UNIVERSITY-Central origin: AS40956 admin-c: IPADDREG tech-c: IPADDREG notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20200420 #19:03:58Z source: RADB last-modified: 2023-11-13T16:15:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.160.166.0/24 descr: ADDED FOR - AS40956 origin: AS40956 notify: noc [at] 123.net mnt-by: I123-MNT changed: rpd [at] 123.net 20190906 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.160.166.0/24 descr: RR-RC-NORTHWOOD UNIVERSITY-Midwest origin: AS40956 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20191127 #23:57:50Z source: RADB last-modified: 2023-11-13T16:15:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.103.178.0/24 descr: ADDED FOR - AS40956 origin: AS40956 notify: noc [at] 123.net mnt-by: I123-MNT changed: rpd [at] 123.net 20180118 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.103.178.0/24 descr: RR-RC-NORTHWOOD UNIVERSITY-Midwest origin: AS40956 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20191127 #23:57:50Z source: RADB last-modified: 2023-11-13T16:15:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source