These entries are queried from radb.net using whois, you can try my project getting these.
:AS-POSTLTD as-set: AS-POSTLTD descr: POSTLTD AS SET members: AS12494 members: AS12484 members: AS41816 members: AS48530 members: AS50727 members: AS57683 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: POSTLTD-MNT created: 2009-09-10T11:06:49Z last-modified: 2022-09-07T08:41:55Z 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: ****************************