These entries are queried from radb.net using whois, you can try my project getting these.
:AS209561 route: 77.83.160.0/23 origin: AS209561 mnt-by: mnt-nl-dv-global-1 created: 2019-01-24T09:53:06Z last-modified: 2019-01-24T09:53:06Z 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: 77.83.162.0/23 origin: AS209561 mnt-by: GETSERVERS-MNT mnt-by: mnt-nl-dv-global-1 created: 2020-01-28T23:29:28Z last-modified: 2020-01-28T23:29:28Z 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: 91.238.20.0/24 origin: AS209561 mnt-by: mnt-nl-dv-global-1 created: 2024-02-26T12:03:34Z last-modified: 2024-02-26T12:03:34Z 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: 91.238.21.0/24 origin: AS209561 mnt-by: mnt-nl-dv-global-1 created: 2024-02-26T12:03:53Z last-modified: 2024-02-26T12:03:53Z 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: 149.5.2.0/24 origin: AS209561 descr: Route Registered for Cogent Communications Customer D&V Global B.V mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20200203 #10:41:40Z source: RADB last-modified: 2023-11-13T15:59:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 149.5.8.0/23 origin: AS209561 descr: Route Registered for Cogent Communications Customer D&V Global B.V mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20200203 #10:40:12Z source: RADB last-modified: 2023-11-13T15:59:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a09:8380:a::/48 origin: AS209561 mnt-by: mnt-nl-dv-global-1 created: 2019-01-23T09:59:12Z last-modified: 2019-01-23T09:59:38Z 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