These entries are queried from radb.net using whois, you can try my project getting these.
:AS1754 route: 131.169.0.0/16 descr: DESY origin: AS1754 member-of: RS-HEPNET mnt-by: AS1754-MNT mnt-by: DFN-MNT created: 1970-01-01T00:00:00Z last-modified: 2021-06-16T10:01:31Z 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: 131.169.169.0/24 origin: AS1754 mnt-by: AS1754-MNT mnt-by: DFN-MNT created: 2021-06-16T10:02:23Z last-modified: 2021-06-16T10:03:42Z 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: valid route: 141.34.0.0/16 descr: ZEHPNET origin: AS1754 member-of: RS-HEPNET mnt-by: AS1754-MNT created: 1970-01-01T00:00:00Z last-modified: 2001-09-22T09:31:52Z 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: 192.76.172.0/24 descr: DESY-EXP origin: AS1754 mnt-by: AS1754-MNT created: 1970-01-01T00:00:00Z last-modified: 2001-09-22T09:33:42Z 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: valid route: 192.109.31.0/24 descr: EMBNET-HH origin: AS1754 mnt-by: AS1754-MNT created: 1970-01-01T00:00:00Z last-modified: 2001-09-22T09:33:38Z 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