These entries are queried from radb.net using whois, you can try my project getting these.
:AS198354 route: 37.19.0.0/21 origin: AS198354 descr: SIS Laboratory's IPv4 Aggregate Route mnt-by: RU-SISLAB-MNT created: 2017-05-30T19:00:43Z last-modified: 2017-05-30T19:00:43Z 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: 37.19.0.0/22 descr: SISTelecom IPv4 Route Object origin: AS198354 mnt-by: RU-SISLAB-MNT created: 2011-12-23T10:04:18Z last-modified: 2018-01-15T14:49:34Z 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: 37.19.1.0/24 descr: SISTelecom IPv4 Route Object origin: AS198354 mnt-by: RU-SISLAB-MNT mnt-by: SCHEGOLEV-MNT created: 2018-05-28T12:18:57Z last-modified: 2018-05-28T12:18:57Z 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: 37.19.2.0/24 descr: SIS Laboratory's IPv4 Route Object origin: AS198354 mnt-by: RU-SISLAB-MNT created: 2012-03-29T18:19:55Z last-modified: 2012-03-29T18:19:55Z 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: 37.19.3.0/24 descr: SIS Laboratory's IPv4 Route Object origin: AS198354 mnt-by: RU-SISLAB-MNT created: 2012-03-29T18:20:54Z last-modified: 2012-03-29T18:20:54Z 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: 37.19.4.0/23 descr: SIS Laboratory's IPv4 Route Object origin: AS198354 mnt-by: RU-SISLAB-MNT created: 2011-12-23T10:08:17Z last-modified: 2011-12-23T10:08:17Z 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: 37.19.4.0/24 descr: SIS Laboratory's IPv4 Route Object origin: AS198354 mnt-by: RU-SISLAB-MNT created: 2012-04-01T20:07:28Z last-modified: 2012-04-01T20:07:28Z 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: 37.19.5.0/24 descr: SIS Laboratory, LLC origin: AS198354 mnt-by: RU-SISLAB-MNT created: 2012-01-16T12:43:06Z last-modified: 2012-01-16T12:43:06Z 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: 37.19.6.0/24 descr: SIS Laboratory's IPv4 Route Object origin: AS198354 mnt-by: RU-SISLAB-MNT created: 2011-12-23T10:08:36Z last-modified: 2011-12-23T10:08:36Z 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: 37.19.7.0/24 descr: SIS Laboratory's IPv4 Route Object origin: AS198354 mnt-by: RU-SISLAB-MNT created: 2012-02-25T11:10:04Z last-modified: 2012-02-26T18:26:07Z 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: 2a00:6240::/32 descr: SIS Laboratory's Route IPv6 Object origin: AS198354 mnt-by: RU-SISLAB-MNT created: 2011-12-21T21:42:41Z last-modified: 2011-12-21T21:42:41Z 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