These entries are queried from radb.net using whois, you can try my project getting these.
:AS136692 route: 103.99.156.0/22 descr: Nomura Research Institute Financial Technologies India Pvt. Ltd mnt-by: MAINT-IN-NRIFT origin: AS136692 last-modified: 2020-07-05T02:18:59Z source: APNIC rpki-ov-state: valid route: 103.99.156.0/22 descr: Nomura Research Institute Financial Technologies I origin: AS136692 mnt-by: MAINT-AS18101 changed: ip.nnoc [at] relianceada.com 20170907 #16:45:05Z source: RADB last-modified: 2023-11-13T15:51:31Z rpki-ov-state: valid route: 103.99.156.0/23 descr: Nomura Research Institute Financial Technologies India Pvt. Ltd mnt-by: MAINT-IN-NRIFT origin: AS136692 last-modified: 2020-07-05T02:18:59Z source: APNIC rpki-ov-state: valid route: 103.99.156.0/24 descr: Nomura Research Institute Financial Technologies I_OM201709052970749 origin: AS136692 mnt-by: MAINT-AS18101 changed: ip.nnoc [at] relianceada.com 20170913 #10:28:00Z source: RADB last-modified: 2023-11-13T15:51:34Z rpki-ov-state: valid route: 103.99.156.0/24 descr: Nomura Research Institute Financial Technologies India Pvt. Ltd mnt-by: MAINT-IN-NRIFT origin: AS136692 last-modified: 2020-07-05T02:18:59Z source: APNIC rpki-ov-state: valid route: 103.99.157.0/24 descr: Nomura Research Institute Financial Technologies India Pvt. Ltd mnt-by: MAINT-IN-NRIFT origin: AS136692 last-modified: 2020-07-05T02:18:59Z source: APNIC rpki-ov-state: valid route: 103.99.157.0/24 descr: Nomura Research Institute Financial Technologies I_OM201709052970749 origin: AS136692 mnt-by: MAINT-AS18101 changed: ip.nnoc [at] relianceada.com 20170913 #10:30:55Z source: RADB last-modified: 2023-11-13T15:51:34Z rpki-ov-state: valid route: 103.99.158.0/23 descr: Nomura Research Institute Financial Technologies India Pvt. Ltd mnt-by: MAINT-IN-NRIFT origin: AS136692 last-modified: 2020-07-05T02:18:59Z source: APNIC rpki-ov-state: valid route: 103.99.158.0/24 descr: Nomura Research Institute Financial Technologies I_OM201709052970749 origin: AS136692 mnt-by: MAINT-AS18101 changed: ip.nnoc [at] relianceada.com 20170913 #10:30:55Z source: RADB last-modified: 2023-11-13T15:51:34Z rpki-ov-state: valid route: 103.99.158.0/24 descr: Nomura Research Institute Financial Technologies India Pvt. Ltd mnt-by: MAINT-IN-NRIFT origin: AS136692 last-modified: 2020-07-05T02:19:00Z source: APNIC rpki-ov-state: valid route: 103.99.159.0/24 descr: Nomura Research Institute Financial Technologies India Pvt. Ltd mnt-by: MAINT-IN-NRIFT origin: AS136692 last-modified: 2020-07-05T02:19:00Z source: APNIC rpki-ov-state: valid route: 103.99.159.0/24 descr: Nomura Research Institute Financial Technologies I_OM201709052970749 origin: AS136692 mnt-by: MAINT-AS18101 changed: ip.nnoc [at] relianceada.com 20170913 #10:30:55Z source: RADB last-modified: 2023-11-13T15:51:34Z rpki-ov-state: valid route6: 2001:df2:5f00::/48 descr: Nomura Research Institute Financial Technologies I origin: AS136692 mnt-by: MAINT-AS18101 changed: ip.nnoc [at] relianceada.com 20170907 #16:46:09Z source: RADB last-modified: 2023-11-13T15:51:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source