These entries are queried from radb.net using whois, you can try my project getting these.
:AS393601 route: 168.166.0.0/16 descr: Data Processing and Telecommunications Suite 280 Truman Bldg Jefferson City MO 65101, USA origin: AS393601 member-of: RS-COMM_NSFNET mnt-by: MAINT-AS2572 changed: noc [at] more.net 20141208 #21:22:09Z source: RADB last-modified: 2023-11-13T15:47:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 168.166.74.0/23 origin: AS393601 descr: Data Processing and Telecommunications Suite 280 Truman Bldg Jefferson City MO 65101, USA member-of: RS-COMM_NSFNET mnt-by: MAINT-AS2572 changed: noc [at] more.net 20220209 #21:20:44Z source: RADB last-modified: 2023-11-13T16:09:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 168.166.224.0/21 origin: AS393601 descr: Data Processing and Telecommunications Suite 280 Truman Bldg Jefferson City MO 65101, USA member-of: RS-COMM_NSFNET mnt-by: MAINT-AS2572 changed: noc [at] more.net 20220209 #21:21:32Z source: RADB last-modified: 2023-11-13T16:09:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 168.166.232.0/22 origin: AS393601 descr: Data Processing and Telecommunications Suite 280 Truman Bldg Jefferson City MO 65101, USA member-of: RS-COMM_NSFNET mnt-by: MAINT-AS2572 changed: noc [at] more.net 20220209 #21:22:46Z source: RADB last-modified: 2023-11-13T16:09:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 168.166.240.0/21 origin: AS393601 descr: Data Processing and Telecommunications Suite 280 Truman Bldg Jefferson City MO 65101, USA member-of: RS-COMM_NSFNET mnt-by: MAINT-AS2572 changed: noc [at] more.net 20220209 #21:23:24Z source: RADB last-modified: 2023-11-13T16:09:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2605:38c0::/32 origin: AS393601 descr: OA, State of Missouri mnt-by: MAINT-AS2572 changed: noc [at] more.net 20200604 #16:59:24Z source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:108:a000::/44 origin: AS393601 descr: OA State of Missouri mnt-by: MAINT-AS2572 changed: noc [at] more.net 20200604 #17:02:19Z source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source