These entries are queried from radb.net using whois, you can try my project getting these.
:AS38509 route: 202.51.56.0/21 descr: Maxima Media origin: AS38509 mnt-by: MAINT-AS4761 changed: support [at] indosat.com 20151204 #09:40:55Z source: RADB last-modified: 2023-11-13T16:12:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.51.56.0/21 descr: Routes announced to Level 3 by BIZNET. origin: AS38509 mnt-by: BIZNET-MNT changed: noc [at] biznetnetworks.com 20150915 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.51.56.0/23 descr: Trans for AS7713 origin: AS38509 remarks: admin contact mail to ipnoc [at] telekommalaysia.com.hk remarks: tech contact mail to ipnoc [at] telekommalaysia.com.hk notify: ipnoc [at] telekommalaysia.com.hk mnt-by: MAINT-TMHKNTT changed: ipnoc [at] telekommalaysia.com.hk 20090514 source: NTTCOM rpki-ov-state: valid route: 202.51.56.0/24 descr: PT. Maxima DATA descr: Jl. Jawa 62 Jember descr: Transit XL-AXIATA Tbk origin: AS38509 country: ID notify: hindra [at] maxima.net.id mnt-routes: MAINT-ID-MAXIMA mnt-by: MAINT-ID-MAXIMA last-modified: 2016-07-15T04:20:54Z source: IDNIC rpki-ov-state: valid route: 202.51.56.0/24 descr: Trans for AS7713 origin: AS38509 remarks: admin contact mail to ipnoc [at] telekommalaysia.com.hk remarks: tech contact mail to ipnoc [at] telekommalaysia.com.hk notify: ipnoc [at] telekommalaysia.com.hk mnt-by: MAINT-TMHKNTT changed: ipnoc [at] telekommalaysia.com.hk 20070907 source: NTTCOM rpki-ov-state: valid route: 202.51.56.0/24 descr: PT. Maxima DATA descr: Jl. Jawa 62 Jember descr: Transit XL-AXIATA Tbk origin: AS38509 country: ID mnt-routes: MAINT-ID-MAXIMA mnt-by: MAINT-ID-MAXIMA last-modified: 2016-07-15T04:20:54Z source: APNIC rpki-ov-state: valid route: 202.51.57.0/24 descr: PT. Maxima DATA descr: Jl. Jawa 62 Jember descr: Transit XL-AXIATA Tbk origin: AS38509 country: ID mnt-routes: MAINT-ID-MAXIMA mnt-by: MAINT-ID-MAXIMA last-modified: 2016-07-15T04:22:21Z source: APNIC rpki-ov-state: valid route: 202.51.57.0/24 descr: PT. Maxima DATA descr: Jl. Jawa 62 Jember descr: Transit XL-AXIATA Tbk origin: AS38509 country: ID notify: hindra [at] maxima.net.id mnt-routes: MAINT-ID-MAXIMA mnt-by: MAINT-ID-MAXIMA last-modified: 2016-07-15T04:22:21Z source: IDNIC rpki-ov-state: valid route: 202.51.57.0/24 descr: Trans for AS7713 origin: AS38509 remarks: admin contact mail to ipnoc [at] telekommalaysia.com.hk remarks: tech contact mail to ipnoc [at] telekommalaysia.com.hk notify: ipnoc [at] telekommalaysia.com.hk mnt-by: MAINT-TMHKNTT changed: ipnoc [at] telekommalaysia.com.hk 20070907 source: NTTCOM rpki-ov-state: valid