These entries are queried from radb.net using whois, you can try my project getting these.
:AS140708 route: 103.21.171.0/24 origin: AS140708 descr: Philippine Telelgraph & Telephone Spirit of Communications Center Building #106 Carlos Palanca Jr. St Legaspi Village mnt-by: MAINT-PH-PTT last-modified: 2020-08-28T04:37:31Z source: APNIC rpki-ov-state: valid