These entries are queried from radb.net using whois, you can try my project getting these.
:AS42017 route: 91.188.128.0/19 descr: ARS-INFORM origin: AS42017 mnt-by: MNT-ARSINFORM created: 2007-02-15T07:56:11Z last-modified: 2007-02-15T07:56:11Z 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: 91.188.128.0/20 descr: ARS-INFORM origin: AS42017 mnt-by: MNT-ARSINFORM created: 2007-05-12T15:56:44Z last-modified: 2007-05-12T15:56:44Z 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: 91.188.128.0/24 descr: ARS-INFORM origin: AS42017 mnt-by: MNT-ARSINFORM created: 2007-12-01T20:31:32Z last-modified: 2007-12-01T20:31:32Z 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: 91.188.129.0/24 descr: ARS-INFORM origin: AS42017 mnt-by: MNT-ARSINFORM created: 2007-12-01T20:31:48Z last-modified: 2007-12-01T20:31:48Z 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: 91.188.144.0/20 descr: ARS-INFORM origin: AS42017 mnt-by: MNT-ARSINFORM created: 2007-09-24T07:27:27Z last-modified: 2012-10-28T09:00:06Z 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: 91.188.144.0/21 origin: AS42017 mnt-by: MNT-ARSINFORM created: 2020-12-06T04:06:06Z last-modified: 2020-12-06T04:06:06Z 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: 91.188.152.0/21 origin: AS42017 mnt-by: MNT-ARSINFORM created: 2020-12-06T04:05:09Z last-modified: 2020-12-06T04:05:09Z 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: 2a02:a98::/32 descr: ISP "Ars-Inform" origin: AS42017 mnt-by: MNT-ARSINFORM created: 2009-03-03T12:36:32Z last-modified: 2009-03-03T12:36:32Z 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