These entries are queried from radb.net using whois, you can try my project getting these.
:AS57848 route: 45.131.152.0/24 origin: AS57848 descr: xTom Customer mnt-by: MAINT-AS9312 changed: david [at] xtom.com 20210107 #20:29:30Z source: RADB last-modified: 2023-11-13T16:03:23Z rpki-ov-state: valid route: 45.131.152.0/24 origin: AS57848 mnt-by: xtom created: 2021-01-07T12:01:18Z last-modified: 2021-01-07T12:01:18Z 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 route6: 2a0b:2540::/32 descr: Vultr Customer Route origin: AS57848 notify: network [at] choopa.com mnt-by: MAINT-AS20473 changed: network [at] choopa.com 20221210 #00:37:51-18000 source: RADB last-modified: 2023-11-13T16:13:12Z rpki-ov-state: valid route6: 2a0b:2540::/32 origin: AS57848 mnt-by: VERYSMOL-MNT created: 2019-12-22T19:30:28Z last-modified: 2023-02-11T01:58:06Z 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 route6: 2a0e:46c2::/32 origin: AS57848 mnt-by: VERYSMOL-MNT created: 2024-01-05T20:47:37Z last-modified: 2024-01-05T20:47:37Z 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 route6: 2a0e:46c6:500::/40 origin: AS57848 mnt-by: VERYSMOL-MNT created: 2019-12-09T14:38:51Z last-modified: 2023-02-11T01:57:29Z 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