These entries are queried from radb.net using whois, you can try my project getting these.
:AS50306 route: 188.227.20.0/22 org: ORG-PVP7-RIPE descr: Nikolskie Kabelnie Seti (NKS) origin: AS50306 mnt-by: PROMETEY-MNT created: 2009-12-18T15:28:03Z last-modified: 2017-11-29T12:50:17Z 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: 188.227.20.0/23 org: ORG-PVP7-RIPE descr: Nikolskie Kabelnie Seti (NKS) origin: AS50306 mnt-by: PROMETEY-MNT created: 2017-11-29T12:42:40Z last-modified: 2017-11-29T12:49:50Z 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: 188.227.22.0/23 org: ORG-PVP7-RIPE descr: Nikolskie Kabelnie Seti (NKS) origin: AS50306 mnt-by: PROMETEY-MNT created: 2017-11-29T12:44:07Z last-modified: 2017-11-29T12:50:33Z 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 route6: 2a01:a280:5::/48 descr: POLUHIN V.A. PE descr: Nikolskie Kabelnie Seti (NKS) origin: AS50306 mnt-by: PROMETEY-MNT created: 2017-05-05T08:43:47Z last-modified: 2017-05-05T08:43:47Z 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