These entries are queried from radb.net using whois, you can try my project getting these.
:AS200583 route: 81.173.36.0/22 descr: InfoCert S.p.A. origin: AS200583 mnt-by: ICE_Mantainer1 created: 2018-03-26T06:44:28Z last-modified: 2018-03-26T06:44:28Z 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: 185.34.248.0/22 descr: InfoCert S.p.A. origin: AS200583 mnt-by: ICE_Mantainer1 created: 2018-04-26T09:59:54Z last-modified: 2018-04-26T10:01:11Z 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: 185.102.40.0/22 descr: InfoCert S.p.A. origin: AS200583 mnt-by: ICE_Mantainer1 created: 2016-03-16T08:34:45Z last-modified: 2016-03-16T08:57:35Z 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: 185.102.41.0/24 descr: InfoCert S.p.A. origin: AS200583 remarks: mnt-by: ICE_Mantainer mnt-by: ICE_Mantainer1 created: 2016-10-27T13:24:26Z last-modified: 2016-10-27T13:24:26Z 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: 185.247.212.0/22 origin: AS200583 mnt-by: ICE_Mantainer1 mnt-by: ICE_Mantainer mnt-by: it-sixtema-1-mnt mnt-by: Six-Mantainer created: 2018-03-15T09:44:45Z last-modified: 2018-03-15T10:12:40Z 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