These entries are queried from radb.net using whois, you can try my project getting these.
:AS201303 route: 212.18.249.0/24 descr: Peer1 Route Object origin: AS201303 mnt-by: maint-as13768 changed: support [at] peer1.com 20150311 source: RADB last-modified: 2023-11-13T15:47:20Z rpki-ov-state: valid route: 212.18.249.0/24 descr: CENTRALNIC origin: AS201303 mnt-by: MAINT-AS32748 changed: admin [at] steadfast.net 20160323 source: ALTDB rpki-ov-state: valid route: 212.18.249.0/24 descr: CentralNic Ltd descr: CentralNic Anycast-F IPv4 Route org: ORG-CL213-RIPE origin: AS201303 notify: ops [at] centralnic.com mnt-by: CENTRALNIC-MNT created: 2014-12-01T15:23:22Z last-modified: 2014-12-01T15:23:22Z 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: 2a04:2b00:13ff::/48 descr: CentralNic Ltd descr: CentralNic Anycast-F IPv6 Route org: ORG-CL213-RIPE origin: AS201303 notify: ops [at] centralnic.com mnt-by: CENTRALNIC-MNT created: 2014-12-01T15:26:29Z last-modified: 2014-12-01T15:26:29Z 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 route6: 2a04:2b00:13ff::/48 descr: Peer1 Route Object origin: AS201303 mnt-by: maint-as13768 changed: support [at] peer1.com 20150311 source: RADB last-modified: 2023-11-13T15:47:20Z rpki-ov-state: valid route6: 2a04:2b00:13ff::/48 descr: CENTRALNIC origin: AS201303 mnt-by: MAINT-AS32748 changed: admin [at] steadfast.net 20160323 source: ALTDB rpki-ov-state: valid route6: 2a04:2b00:13ff::/48 descr: SERVERS AUSTRALIA PTY LTD origin: AS201303 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