These entries are queried from radb.net using whois, you can try my project getting these.
:AS22640 route: 160.206.140.0/24 descr: Customer Route Object - Hansen Technologies origin: AS22640 mnt-by: MAINT-ADN-WEST changed: routing [at] americanis.net 20141107 #00:10:31Z source: RADB last-modified: 2023-11-13T15:46:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 160.206.144.0/24 descr: Customer Route Object - Hansen Technologies origin: AS22640 mnt-by: MAINT-ADN-WEST changed: routing [at] americanis.net 20141113 #20:29:15Z source: RADB last-modified: 2023-11-13T15:46:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 160.206.148.0/22 descr: Customer Route Object - Hansen Technologies origin: AS22640 mnt-by: MAINT-ADN-WEST changed: routing [at] americanis.net 20131227 #19:36:44Z source: RADB last-modified: 2023-11-13T15:45:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 160.206.148.0/24 descr: Customer Route Object - Hansen Technologies origin: AS22640 mnt-by: MAINT-ADN-WEST changed: routing [at] americanis.net 20140115 #23:39:54Z source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 160.206.149.0/24 descr: Customer Route Object - Hansen Technologies origin: AS22640 mnt-by: MAINT-ADN-WEST changed: routing [at] americanis.net 20140115 #23:40:29Z source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 160.206.150.0/24 descr: Customer Route Object - Hansen Technologies origin: AS22640 mnt-by: MAINT-ADN-WEST changed: routing [at] americanis.net 20140115 #23:41:00Z source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 160.206.151.0/24 descr: Customer Route Object - Hansen Technologies origin: AS22640 mnt-by: MAINT-ADN-WEST changed: routing [at] americanis.net 20140115 #23:41:48Z source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 160.206.152.0/24 descr: Customer Route Object - Hansen Technologies origin: AS22640 mnt-by: MAINT-ADN-WEST changed: routing [at] americanis.net 20131227 #19:38:14Z source: RADB last-modified: 2023-11-13T15:45:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source