These entries are queried from radb.net using whois, you can try my project getting these.
:AS204055 route: 212.18.251.0/24 descr: CentralNic Route Object origin: AS204055 mnt-by: MAINT-AS33480 changed: nikhil [at] webwerks.com 20151115 #23:19:15Z source: RADB last-modified: 2023-11-13T16:18:48Z rpki-ov-state: valid route: 212.18.251.0/24 descr: CentralNic Ltd descr: CentralNic IPv4 Anycast H Route org: ORG-CL213-RIPE origin: AS204055 mnt-by: CENTRALNIC-MNT notify: ops [at] centralnic.com created: 2015-10-26T10:49:45Z last-modified: 2015-10-26T11:42:18Z 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 route: 212.18.251.0/24 descr: CENTRALNIC origin: AS204055 mnt-by: MAINT-AS32748 changed: admin [at] steadfast.net 20160323 source: ALTDB rpki-ov-state: valid route6: 2a04:2b00:14bb::/48 descr: CentralNic Ltd descr: CentralNic IPv6 Anycast H Route org: ORG-CL213-RIPE origin: AS204055 mnt-by: CENTRALNIC-MNT notify: ops [at] centralnic.com created: 2015-10-26T10:49:14Z last-modified: 2015-10-26T10:49:14Z 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: 2a04:2b00:14bb::/48 descr: CentralNic Route Object origin: AS204055 mnt-by: MAINT-AS33480 changed: nikhil [at] webwerks.com 20151115 #23:20:40Z source: RADB last-modified: 2023-11-13T16:18:48Z rpki-ov-state: valid route6: 2a04:2b00:14bb::/48 descr: CENTRALNIC origin: AS204055 mnt-by: MAINT-AS32748 changed: admin [at] steadfast.net 20160323 source: ALTDB rpki-ov-state: valid route6: 2a04:2b00:14bb::/48 descr: SERVERS AUSTRALIA PTY LTD origin: AS204055 notify: net-support [at] ap.equinix.com notify: ap-noc [at] ap.equinix.com mnt-by: MAINT-EQUINIXPAC changed: mrivas [at] ap.equinix.com 20180811 source: NTTCOM rpki-ov-state: valid