These entries are queried from radb.net using whois, you can try my project getting these.
:AS50751 route: 91.242.52.0/22 descr: ASSIGNED PI Chuguev's Computer Networks(CH.K.S.) origin: AS50751 mnt-by: CHKS-MNT created: 2012-11-06T17:46:47Z last-modified: 2012-11-06T17:46:47Z 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: 91.242.55.0/24 descr: ASSIGNED PI Chuguev's Computer Networks(CH.K.S.) origin: AS50751 mnt-by: CHKS-MNT created: 2012-12-28T14:21:14Z last-modified: 2012-12-28T14:21:14Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 178.216.0.0/21 descr: ASSIGNED PI Chuguev's Computer Networks(CH.K.S.) origin: AS50751 mnt-by: CHKS-MNT created: 2010-03-19T09:49:48Z last-modified: 2010-03-19T09:51:06Z 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: 178.216.1.0/24 descr: ASSIGNED PI Chuguev's Computer Networks(CH.K.S.) origin: AS50751 mnt-by: CHKS-MNT created: 2012-12-28T14:18:05Z last-modified: 2012-12-28T14:18:05Z 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: 178.216.2.0/24 descr: ASSIGNED PI Chuguev's Computer Networks(CH.K.S.) origin: AS50751 mnt-by: CHKS-MNT created: 2012-12-28T14:17:27Z last-modified: 2012-12-28T14:17:27Z 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: 178.216.3.0/24 descr: ASSIGNED PI Chuguev's Computer Networks(CH.K.S.) origin: AS50751 mnt-by: CHKS-MNT created: 2012-12-28T14:14:33Z last-modified: 2012-12-28T14:14:33Z 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: 178.216.4.0/24 descr: ASSIGNED PI Chuguev's Computer Networks(CH.K.S.) origin: AS50751 mnt-by: CHKS-MNT created: 2012-12-28T14:16:44Z last-modified: 2012-12-28T14:16:44Z 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: 178.216.5.0/24 descr: ASSIGNED PI Chuguev's Computer Networks(CH.K.S.) origin: AS50751 mnt-by: CHKS-MNT created: 2012-12-28T14:16:00Z last-modified: 2012-12-28T14:16:00Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 178.216.7.0/24 descr: ASSIGNED PI Chuguev's Computer Networks(CH.K.S.) origin: AS50751 mnt-by: CHKS-MNT created: 2010-04-21T06:37:12Z last-modified: 2010-04-21T06:37:12Z 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: 195.62.25.0/24 origin: AS50751 mnt-by: PITLINE-MNT created: 2019-11-05T12:22:21Z last-modified: 2019-11-05T12:22:21Z 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