These entries are queried from radb.net using whois, you can try my project getting these.
:AS137269 route: 103.106.117.0/24 origin: AS137269 descr: Novartis Singapore Pte Ltd 20 Pasir Panjang Road #10-25 Mapletree Business City mnt-by: MAINT-NSPL-SG last-modified: 2018-01-10T07:42:37Z source: APNIC rpki-ov-state: valid