These entries are queried from radb.net using whois, you can try my project getting these.
:AS-HOSTHATCH as-set: AS-HOSTHATCH descr: AS63473 and downstream ASNs members: AS63473 members: AS43969 members: AS59238 members: AS209864 members: AS208391 members: AS139921 members: AS51044 members: AS209261 members: AS207455 members: AS211305 mnt-by: MAINT-AS63473 changed: emil [at] hosthatch.com 20210529 source: ALTDB as-set: AS-HOSTHATCH descr: AS63473 and downstream ASNs tech-c: DUMY-RIPE admin-c: DUMY-RIPE members: AS63473 members: AS43969 members: AS59238 members: AS209864 members: AS208391 members: AS139921 members: AS51044 members: AS209261 members: AS207455 members: AS211305 members: AS147028 members: AS208393 members: AS399663 members: AS204778 members: AS205398 members: AS200690 members: AS198969 members: AS150323 members: AS151483 members: AS139888 members: AS139742 members: AS150766 members: AS200227 members: AS210250 members: AS215935 members: AS206919 members: AS216107 members: AS200950 members: AS199334 members: AS18428 members: AS215842 mnt-by: MNT-HOSTHATCH created: 2016-08-17T18:56:22Z last-modified: 2024-03-19T01:12:46Z 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: ****************************