These entries are queried from radb.net using whois, you can try my project getting these.
:AS8819 route: 46.227.104.0/21 descr: Metro Internet Network origin: AS8819 mnt-by: MNT-METRO-INTERNET created: 2011-02-24T13:30:21Z last-modified: 2011-02-24T13:30:21Z 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: 83.142.192.0/21 descr: Internet i Media origin: AS8819 mnt-by: MNT-METRO-INTERNET created: 2010-09-01T11:08:00Z last-modified: 2010-09-01T11:08:00Z 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: 91.189.24.0/21 descr: Metro Internet origin: AS8819 mnt-by: MNT-METRO-INTERNET created: 2007-01-02T06:06:24Z last-modified: 2007-01-02T06:06:24Z 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: 185.188.68.0/22 origin: AS8819 mnt-by: MNT-METRO-INTERNET created: 2017-08-30T11:00:56Z last-modified: 2017-08-30T11:00:56Z 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:6180::/29 origin: AS8819 mnt-by: MNT-METRO-INTERNET mnt-by: MNT-METRO-INTERNET created: 2022-05-26T08:54:39Z last-modified: 2022-05-26T08:54:39Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a10:f781:10:b447::/64 origin: AS8819 descr: EPIX-LORA-METROINT mnt-by: EPOLUDNIE-MNT mnt-by: EPOLUDNIE-MP-MNT mnt-lower: EPOLUDNIE-MNT mnt-lower: EPOLUDNIE-MP-MNT created: 2022-05-16T06:42:54Z last-modified: 2022-05-16T06:42:54Z 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: not_found # No ROAs found, or RPKI validation not enabled for source