These entries are queried from radb.net using whois, you can try my project getting these.
:AS-LTC as-set: AS-LTC descr: LTK Customers members: AS43972 members: AS29031 members: AS29576 members: AS41709 members: AS49444 members: AS50015 members: AS57194 members: AS-MULTIDC members: AS209720 members: AS57549 members: AS60287 members: AS47204 members: AS39728 members: AS51511 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: LTC-MNT notify: info [at] lugtel.com created: 2002-11-22T16:05:54Z last-modified: 2024-02-02T09:45:56Z 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: ****************************