These entries are queried from radb.net using whois, you can try my project getting these.
:AS51904 route: 91.132.104.0/22 origin: AS51904 mnt-by: mnt-ru-utex-telecom-1 created: 2019-01-17T07:31:39Z last-modified: 2019-01-17T07:31:39Z 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 route: 193.41.76.0/22 descr: Utex-Telecom PI Block origin: AS51904 mnt-by: RU-ANDERS-MNT created: 2010-11-29T09:32:58Z last-modified: 2010-11-29T09:32:58Z 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