These entries are queried from radb.net using whois, you can try my project getting these.
:AS57554 route: 91.223.189.0/24 descr: Zavarovalnica Tilia, d.d. origin: AS57554 mnt-by: AS5603-MNT mnt-by: TELEMACH-MNT created: 2014-11-19T08:19:51Z last-modified: 2018-01-17T12:55:35Z 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: 91.232.239.0/24 descr: Zavarovalnica Maribor d.d. descr: http://www.zav-mb.si origin: AS57554 mnt-by: TELEMACH-MNT remarks: --------------------------------------------------------------- remarks: Please report abuse to SIT_abuse [at] zav-mb.si remarks: --------------------------------------------------------------- created: 2011-12-06T19:34:05Z last-modified: 2018-01-17T12:57:11Z 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