These entries are queried from radb.net using whois, you can try my project getting these.
:AS57550 route: 91.232.236.0/23 descr: OTP BANKA SRBIJA origin: AS57550 mnt-by: SBB-MNT notify: ripe [at] sbb.rs created: 2011-11-25T10:16:48Z last-modified: 2011-11-25T10:16:48Z 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: 91.232.236.0/24 descr: OTP BANKA SRBIJA origin: AS57550 mnt-by: SBB-MNT notify: ripe [at] sbb.rs created: 2018-11-09T14:43:09Z last-modified: 2018-11-09T14:43:09Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 91.232.237.0/24 descr: OTP BANKA SRBIJA origin: AS57550 mnt-by: SBB-MNT notify: ripe [at] sbb.rs created: 2018-11-09T14:43:19Z last-modified: 2018-11-09T14:43:19Z 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