These entries are queried from radb.net using whois, you can try my project getting these.
:AS2148 route: 144.206.144.0/21 descr: National Research Center "Kurchatov Institute" descr: Institute for Theoretical and Experimental Physics origin: AS2148 notify: noc [at] itep.ru mnt-by: AS59624-MNT created: 2019-12-04T17:47:13Z last-modified: 2019-12-04T17:47:13Z 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 route: 192.148.166.0/24 descr: ITEP PA DELEGATED BLOCK descr: A.I.Alikhanov Institute descr: for Theoretical and Experimental Physics descr: B.Cheremushkinskaya, 25, Moscow, Russia origin: AS2148 mnt-by: ITEP-MNT created: 1970-01-01T00:00:00Z last-modified: 2005-11-08T22:04:02Z 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: 2001:67c:1bec:f000::/52 descr: ITEP/IPv6 descr: Russian Research Centre "Kurchatov Institute" descr: ( Kurchatov Institute of Atomic Energy ) descr: A.I.Alikhanov Institute descr: or Theoretical and Experimental Physics descr: B.Cheremushkinskaya, 25, Moscow descr: Russia origin: AS2148 notify: noc [at] itep.ru mnt-by: AS59624-MNT created: 2019-04-08T09:37:51Z last-modified: 2019-04-08T09:37:51Z 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