These entries are queried from radb.net using whois, you can try my project getting these.
:AS57998 route: 91.237.154.0/23 descr: P.I.W. ANFA S.C. origin: AS57998 mnt-by: TPNET mnt-by: ATRIW-MNT created: 2012-04-18T09:53:54Z last-modified: 2020-03-10T09:35:46Z 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: 91.237.156.0/22 descr: P.I.W. ANFA S.C. origin: AS57998 mnt-by: TPNET mnt-by: ATRIW-MNT created: 2012-04-18T09:53:54Z last-modified: 2020-03-10T09:36:57Z 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