These entries are queried from radb.net using whois, you can try my project getting these.
:AS136531 route: 103.91.228.0/22 origin: AS136531 descr: NetExpress Online mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-04-03T08:19:23Z source: APNIC rpki-ov-state: valid route: 103.91.228.0/24 origin: AS136531 descr: NetExpress Online mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2017-05-07T13:39:39Z source: APNIC rpki-ov-state: valid route: 103.91.229.0/24 origin: AS136531 descr: NetExpress Online mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-04-03T08:20:54Z source: APNIC rpki-ov-state: valid route: 103.91.230.0/24 origin: AS136531 descr: NetExpress Online mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-04-03T08:21:30Z source: APNIC rpki-ov-state: valid route: 103.91.231.0/24 origin: AS136531 descr: NetExpress Online mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-04-03T08:22:04Z source: APNIC rpki-ov-state: valid route6: 2401:14c0::/32 origin: AS136531 descr: NetExpress Online mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-04-03T08:22:46Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:1::/48 origin: AS136531 descr: NetExpress Online mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:03:31Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:2::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:02:16Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:3::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:06:36Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:4::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:08:34Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:5::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:08:57Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:6::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:09:25Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:7::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:10:04Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:8::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:10:21Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:9::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:10:41Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:a::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2020-02-16T09:40:49Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:b::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2020-02-16T09:41:18Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:c::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2020-02-16T09:41:51Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:d::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2022-07-04T12:40:21Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:e::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2022-07-04T12:40:50Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:f::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2022-07-04T12:41:18Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:10::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2022-07-04T12:41:39Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:11::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2022-07-04T12:41:57Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:12::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2022-07-04T12:43:20Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:13::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2022-07-04T12:43:40Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:14::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2022-07-04T12:43:57Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:15::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2022-07-04T12:44:19Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:16::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2022-07-04T12:44:47Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:21::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:11:28Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:2a::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:11:48Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:2c::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:12:22Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:2d::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:12:42Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:4a::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2020-04-04T17:57:56Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:8a::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:13:18Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:8b::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:13:43Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:8c::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:14:00Z source: APNIC rpki-ov-state: valid route6: 2401:14c0:8d::/48 origin: AS136531 descr: Mohammad Jamal Hossain Talukder 421/A, Nayatola, Mogbazar mnt-by: MAINT-NETEXPRESSONLINE-BD last-modified: 2019-10-24T10:14:18Z source: APNIC rpki-ov-state: valid