These entries are queried from radb.net using whois, you can try my project getting these.
:AS206646 route: 185.171.57.0/24 origin: AS206646 mnt-by: us-enterprise-route-mnt mnt-by: us-enterprise-domain-mnt mnt-by: us-enterprise-1-mnt created: 2021-12-14T16:27:10Z last-modified: 2021-12-14T16:27:10Z 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: 185.171.58.0/23 descr: EHI-Equinix-London/Slough-UK origin: AS206646 mnt-by: us-enterprise-1-mnt mnt-by: us-enterprise-route-mnt created: 2016-12-05T20:39:05Z last-modified: 2016-12-06T22:27:07Z 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 route: 185.171.58.0/24 origin: AS206646 mnt-by: us-enterprise-1-mnt mnt-by: us-enterprise-route-mnt created: 2017-03-09T16:01:42Z last-modified: 2017-03-09T16:01:42Z 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: 185.171.59.0/24 origin: AS206646 mnt-by: us-enterprise-1-mnt mnt-by: us-enterprise-route-mnt created: 2017-03-09T16:02:16Z last-modified: 2017-03-09T16:02:16Z 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 route6: 2a0a:d900:4407::/48 descr: EHI-Equinix-London/Slough-UK origin: AS206646 mnt-by: us-enterprise-1-mnt mnt-by: us-enterprise-route-mnt created: 2016-12-05T20:45:28Z last-modified: 2016-12-06T22:36:05Z 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