These entries are queried from radb.net using whois, you can try my project getting these.
:AS30935 route: 91.223.186.0/24 descr: Datatrans AG origin: AS30935 mnt-by: DATATRANS-CH-MNT created: 2011-03-10T07:48:18Z last-modified: 2011-03-10T07:48:18Z 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: 185.253.204.0/22 descr: Datatrans AG origin: AS30935 mnt-by: DATATRANS-CH-MNT created: 2018-05-23T13:46:27Z last-modified: 2018-05-23T13:46:27Z 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: 193.16.220.0/24 descr: Datatrans AG origin: AS30935 mnt-by: DATATRANS-CH-MNT created: 2004-07-14T12:34:10Z last-modified: 2008-02-13T09:05:42Z 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