These entries are queried from radb.net using whois, you can try my project getting these.
:AS28994 route: 91.142.160.0/20 descr: ISP SITEL origin: AS28994 mnt-by: PM17-MNT created: 2007-03-19T13:22:43Z last-modified: 2017-02-06T14:00:18Z 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: 91.142.160.0/21 descr: ISP SITEL origin: AS28994 mnt-by: PM17-MNT created: 2007-03-19T13:23:10Z last-modified: 2017-02-06T13:50:47Z 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: 91.142.168.0/21 descr: ISP SITEL origin: AS28994 mnt-by: PM17-MNT created: 2007-03-19T13:24:00Z last-modified: 2017-02-06T13:52:16Z 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: 217.27.144.0/20 descr: ISP SITEL origin: AS28994 mnt-by: PM17-MNT created: 2003-05-08T17:03:32Z last-modified: 2017-02-06T13:59:24Z 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: 217.27.144.0/21 origin: AS28994 mnt-by: PM17-MNT created: 2019-08-08T13:13:56Z last-modified: 2019-08-08T13:23:53Z source: RIPE descr: ISP SITEL 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: 217.27.152.0/21 descr: ISP SITEL origin: AS28994 mnt-by: PM17-MNT created: 2004-10-27T11:13:45Z last-modified: 2017-02-06T13:48:45Z 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: 2a03:420::/32 descr: SITEL ISP origin: AS28994 mnt-by: PM17-MNT created: 2014-07-01T16:25:31Z last-modified: 2017-02-06T13:48:04Z 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