These entries are queried from radb.net using whois, you can try my project getting these.
:AS136948 route: 103.99.248.0/22 descr: TVN origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2023-01-11T08:12:59Z source: APNIC rpki-ov-state: valid route: 103.99.248.0/23 descr: TVN origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2023-01-11T08:13:01Z source: APNIC rpki-ov-state: valid route: 103.99.248.0/24 descr: TVN origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2023-01-11T08:13:04Z source: APNIC rpki-ov-state: valid route: 103.99.249.0/24 descr: TVN origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2023-01-11T08:13:07Z source: APNIC rpki-ov-state: valid route: 103.99.250.0/23 descr: TVN origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2023-01-11T08:13:10Z source: APNIC rpki-ov-state: valid route: 103.99.250.0/24 descr: TVN origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2023-01-11T08:13:12Z source: APNIC rpki-ov-state: valid route: 103.99.251.0/24 descr: TVN origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2023-01-11T08:13:15Z source: APNIC rpki-ov-state: valid route6: 2401:b640::/32 origin: AS136948 descr: TVN mnt-by: MAINT-TODAYVISION-BD last-modified: 2022-04-24T14:14:08Z source: APNIC rpki-ov-state: valid route6: 2401:b640::/48 descr: TVN CDN origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2022-04-24T14:12:02Z source: APNIC rpki-ov-state: valid route6: 2401:b640:1::/48 descr: TVN Local 1 origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2023-02-21T18:12:17Z source: APNIC rpki-ov-state: valid route6: 2401:b640:2::/48 descr: TVN Local 2 origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2023-02-21T18:16:56Z source: APNIC rpki-ov-state: valid route6: 2401:b640:3::/48 descr: TVN Local 3 origin: AS136948 mnt-by: MAINT-TODAYVISION-BD last-modified: 2023-02-21T18:16:57Z source: APNIC rpki-ov-state: valid