These entries are queried from radb.net using whois, you can try my project getting these.
:AS150726 route: 103.74.10.0/23 descr: U-MAX INTERNET origin: AS150726 mnt-by: MAINT-UMAXINTERNET-BD mnt-by: MAINT-UMAXINTERNET-BD mnt-lower: MAINT-UMAXINTERNET-BD mnt-routes: MAINT-UMAXINTERNET-BD last-modified: 2023-01-24T15:44:16Z source: APNIC rpki-ov-state: valid route: 103.74.10.0/24 descr: UMAXINTERNET-BD origin: AS150726 mnt-by: MAINT-UMAXINTERNET-BD mnt-by: MAINT-UMAXINTERNET-BD mnt-lower: MAINT-UMAXINTERNET-BD mnt-routes: MAINT-UMAXINTERNET-BD last-modified: 2023-01-24T15:37:32Z source: APNIC rpki-ov-state: valid route: 103.74.11.0/24 descr: UMAXINTERNET-BD origin: AS150726 mnt-by: MAINT-UMAXINTERNET-BD mnt-by: MAINT-UMAXINTERNET-BD mnt-lower: MAINT-UMAXINTERNET-BD mnt-routes: MAINT-UMAXINTERNET-BD last-modified: 2023-01-24T15:38:03Z source: APNIC rpki-ov-state: valid route6: 2001:df1:dd40::/48 descr: U-MAX INTERNET mnt-lower: MAINT-UMAXINTERNET-BD mnt-routes: MAINT-UMAXINTERNET-BD mnt-by: MAINT-UMAXINTERNET-BD country: BD origin: AS150726 last-modified: 2023-01-24T15:42:12Z source: APNIC rpki-ov-state: valid