These entries are queried from radb.net using whois, you can try my project getting these.
:AS49305 route: 62.204.50.0/24 origin: AS49305 mnt-by: Alsycon-BV mnt-by: Alsycon-BV-mnt created: 2022-03-15T18:24:42Z last-modified: 2022-03-15T18:24:42Z 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: 94.247.136.0/24 origin: AS49305 mnt-by: Alsycon-BV mnt-by: Alsycon-BV-mnt created: 2022-04-05T10:41:52Z last-modified: 2022-04-05T10:41:52Z 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: 178.255.217.0/24 origin: AS49305 mnt-by: Alsycon-BV mnt-by: Alsycon-BV-mnt created: 2022-04-11T14:42:09Z last-modified: 2022-04-11T14:42:09Z 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: 185.228.251.0/24 origin: AS49305 mnt-by: MB-KYOX-NL mnt-by: MNT-KYOX-NL created: 2022-09-08T12:31:33Z last-modified: 2022-09-08T12:31:33Z 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:3ec0::/29 origin: AS49305 mnt-by: Alsycon-BV mnt-by: Alsycon-BV-mnt created: 2023-05-01T18:09:32Z last-modified: 2023-05-01T18:09:32Z 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