These entries are queried from radb.net using whois, you can try my project getting these.
:AS58704 route: 103.20.140.0/22 descr: NET-103-20-140-0 Route Object origin: AS58704 country: BD mnt-lower: MAINT-INTRAGLOBE-BD mnt-routes: MAINT-INTRAGLOBE-BD mnt-by: MAINT-INTRAGLOBE-BD last-modified: 2013-03-02T12:22:20Z source: APNIC rpki-ov-state: valid route: 103.20.140.0/23 origin: AS58704 descr: Intraglobe Communications Ltd. Suite 901 Concord Tower 113 Kazi Nazrul Islam Ave. mnt-by: MAINT-INTRAGLOBE-BD last-modified: 2022-10-06T18:21:56Z source: APNIC rpki-ov-state: valid route: 103.20.140.0/24 origin: AS58704 descr: Intraglobe Communications Ltd. Suite 901 Concord Tower 113 Kazi Nazrul Islam Ave. mnt-by: MAINT-INTRAGLOBE-BD last-modified: 2022-10-06T18:21:57Z source: APNIC rpki-ov-state: valid route: 103.20.141.0/24 origin: AS58704 descr: Intraglobe Communications Ltd. Suite 901 Concord Tower 113 Kazi Nazrul Islam Ave. mnt-by: MAINT-INTRAGLOBE-BD last-modified: 2022-10-06T18:21:59Z source: APNIC rpki-ov-state: valid route: 103.20.142.0/23 origin: AS58704 descr: Intraglobe Communications Ltd. Suite 901 Concord Tower 113 Kazi Nazrul Islam Ave. mnt-by: MAINT-INTRAGLOBE-BD last-modified: 2022-10-06T18:22:00Z source: APNIC rpki-ov-state: valid route: 103.20.142.0/24 origin: AS58704 descr: Intraglobe Communications Ltd. Suite 901 Concord Tower 113 Kazi Nazrul Islam Ave. mnt-by: MAINT-INTRAGLOBE-BD last-modified: 2022-10-06T18:22:02Z source: APNIC rpki-ov-state: valid route: 103.20.143.0/24 origin: AS58704 descr: Intraglobe Communications Ltd. Suite 901 Concord Tower 113 Kazi Nazrul Islam Ave. mnt-by: MAINT-INTRAGLOBE-BD last-modified: 2022-10-06T18:22:03Z source: APNIC rpki-ov-state: valid route6: 2405:2f00::/32 origin: AS58704 descr: Intraglobe Communications Ltd. Suite 901 Concord Tower 113 Kazi Nazrul Islam Ave. mnt-by: MAINT-INTRAGLOBE-BD last-modified: 2024-02-27T12:30:27Z source: APNIC rpki-ov-state: valid