These entries are queried from radb.net using whois, you can try my project getting these.
:AS56289 route: 103.4.36.0/23 origin: AS56289 descr: Akamai Technologies, Inc. mnt-by: MAINT-AS32787 changed: rmanocha [at] akamai.com 20231122 # 0510Z source: RADB last-modified: 2023-11-22T05:10:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.4.36.0/23 origin: AS56289 descr: DBS Bank Ltd 2 Changi Business Park Crescent DBS Asia Hub mnt-by: MAINT-DBS-NET-1-SG last-modified: 2020-11-10T03:14:07Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.124.4.0/23 origin: AS56289 descr: DBS Vickers Securities (Singapore) PTE LTD 12 Marina Boulevard #10-01 DBS Asia Centreal @MBFC Tower 3 mnt-by: MAINT-SG-DBSVO last-modified: 2021-01-06T04:22:39Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.127.2.0/24 origin: AS56289 descr: SingNet Pte Ltd c/o Singapore Telecommunications Accounts Payable Department 31 Exeter Road, #16-00 Comcent mnt-by: MAINT-SG-SINGNET last-modified: 2019-10-24T06:29:22Z source: APNIC rpki-ov-state: valid route: 210.79.56.0/24 origin: AS56289 descr: Akamai Technologies mnt-by: MAINT-AS32787 changed: akanauji [at] akamai.com 20220901 #10:55:52Z 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: 210.79.56.0/24 origin: AS56289 descr: DBS Bank Ltd 2 Changi Business Park Crescent DBS Asia Hub mnt-by: MAINT-DBS-NET-1-SG last-modified: 2020-11-10T03:19:54Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.79.57.0/24 origin: AS56289 descr: DBS Bank Ltd 2 Changi Business Park Crescent DBS Asia Hub mnt-by: MAINT-DBS-NET-1-SG last-modified: 2020-11-10T03:14:07Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.79.57.0/24 origin: AS56289 descr: Akamai Technologies, Inc. mnt-by: MAINT-AS32787 changed: rmanocha [at] akamai.com 20231122 # 0511Z source: RADB last-modified: 2023-11-22T05:11:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source