These entries are queried from radb.net using whois, you can try my project getting these.
:AS20889 route: 91.206.38.0/23 descr: SNP-NET origin: AS20889 mnt-by: BCCDC-MNT created: 2008-08-06T09:38:50Z last-modified: 2018-01-19T15:54:10Z 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: 194.50.37.0/24 descr: SNP Poland Sp z.o.o origin: AS20889 mnt-by: BCCDC-MNT created: 2006-09-11T10:03:34Z last-modified: 2018-02-15T15:15:33Z 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: not_found # No ROAs found, or RPKI validation not enabled for source