These entries are queried from radb.net using whois, you can try my project getting these.
:AS138380 route: 192.157.12.0/24 descr: VOLVO origin: AS138380 mnt-by: MAINT-AS4766 changed: ipnoc [at] kt.com 20181122 #05:31:23Z source: RADB last-modified: 2023-11-13T16:15:45Z rpki-ov-state: valid route: 192.157.12.0/24 descr: Volvo Information Technology AB origin: AS138380 mnt-by: VOLVO-MNT created: 2021-01-19T13:56:12Z last-modified: 2021-01-19T13:56:12Z 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: valid route: 192.157.13.0/24 descr: Volvo Information Technology AB origin: AS138380 mnt-by: VOLVO-MNT created: 2021-01-19T13:59:03Z last-modified: 2021-01-19T13:59:03Z 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: valid route: 203.254.239.0/24 origin: AS138380 descr: VOLVO_GROUP_KOREA mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20200612 #03:27:13Z source: RADB last-modified: 2023-11-13T16:00:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.254.240.0/24 origin: AS138380 descr: VOLVO_GROUP_KOREA mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20200612 #03:27:13Z source: RADB last-modified: 2023-11-13T16:00:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source