These entries are queried from radb.net using whois, you can try my project getting these.
:AS51903 route: 91.221.124.0/23 descr: MGS-NET origin: AS51903 mnt-by: MNT-WEARENET created: 2010-11-26T14:25:33Z last-modified: 2010-11-26T14:25:33Z 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: 194.106.218.0/23 origin: AS51903 mnt-by: VBAR-MNT mnt-by: MNT-WEARENET created: 2020-07-24T12:59:58Z last-modified: 2020-07-24T13:01:10Z source: RIPE descr: WeAreNet LLC 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: 195.26.92.0/23 descr: CHID KH origin: AS51903 mnt-by: MNT-WEARENET created: 2017-06-23T14:08:34Z last-modified: 2017-06-23T14:08:34Z 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: valid route6: 2a00:1db0:51::/48 descr: MGS-NET-IPV6 origin: AS51903 mnt-by: MNT-WEARENET created: 2011-02-07T12:29:01Z last-modified: 2011-02-07T12:29:01Z 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: 2a0c:3a81::/40 descr: WeAreNet KH IPv6 Network origin: AS51903 mnt-by: MNT-WEARENET created: 2018-04-03T12:47:15Z last-modified: 2018-04-03T12:47:15Z 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