These entries are queried from radb.net using whois, you can try my project getting these.
:AS51972 route: 91.222.60.0/22 descr: AS-SIMTELECOM Route origin: AS51972 mnt-by: SIMTELECOM created: 2010-12-08T16:12:30Z last-modified: 2014-03-14T13:36:09Z 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: valid route: 91.222.60.0/24 descr: AS-SIMTELECOM Route origin: AS51972 mnt-by: SIMTELECOM created: 2014-03-14T13:33:15Z last-modified: 2014-03-14T13:33:15Z 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: valid route: 91.222.61.0/24 descr: AS-SIMTELECOM Route origin: AS51972 mnt-by: SIMTELECOM created: 2014-03-14T13:42:00Z last-modified: 2014-03-14T13:42:00Z 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: valid route: 91.222.62.0/24 descr: AS-SIMTELECOM Route origin: AS51972 mnt-by: SIMTELECOM created: 2014-03-14T13:42:43Z last-modified: 2014-03-14T13:42:43Z 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: valid route: 91.222.63.0/24 descr: AS-SIMTELECOM Route origin: AS51972 mnt-by: SIMTELECOM created: 2014-03-14T13:43:15Z last-modified: 2014-03-14T13:43:15Z 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: valid route6: 2a09:8387:ffff::/48 origin: AS51972 mnt-by: mnt-nl-dv-global-1 created: 2019-03-11T11:14:51Z last-modified: 2019-03-11T11:14:51Z 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