These entries are queried from radb.net using whois, you can try my project getting these.
:AS-DTLN-SPB as-set: as-dtln-spb descr: DTLN-SPB members: AS205305 members: AS60413 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: DTLN-MNT created: 2017-09-28T14:41:06Z last-modified: 2018-02-15T14:20:01Z 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: ****************************