These entries are queried from radb.net using whois, you can try my project getting these.
:AS135066 route: 103.208.3.0/24 origin: AS135066 descr: Akamai Technologies, Inc. mnt-by: MAINT-AS32787 changed: bdaly [at] akamai.com 20201119 #23:58:55Z source: RADB last-modified: 2023-11-13T16:13:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.208.3.0/24 origin: AS135066 descr: Schroders Investment Management (Singapore) Limited 138 Market Street #23-01 CapitaGreen Singapore 048946 mnt-by: MAINT-SIML-SG last-modified: 2020-02-05T03:55:21Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source