These entries are queried from radb.net using whois, you can try my project getting these.
:AS133430 route: 103.228.120.0/22 origin: AS133430 descr: Islami Bank Bangladesh Limited Islami Bank Tower 40, Dilkusha C/A mnt-by: MAINT-IBBL-BD last-modified: 2019-11-24T05:39:39Z source: APNIC rpki-ov-state: valid route: 103.228.120.0/23 origin: AS133430 descr: Islami Bank Bangladesh Limited Islami Bank Tower 40, Dilkusha C/A mnt-by: MAINT-IBBL-BD last-modified: 2019-11-24T03:26:35Z source: APNIC rpki-ov-state: valid route: 103.228.120.0/24 origin: AS133430 descr: Islami Bank Bangladesh Limited Islami Bank Tower 40, Dilkusha C/A mnt-by: MAINT-IBBL-BD last-modified: 2019-11-21T07:05:23Z source: APNIC rpki-ov-state: valid route: 103.228.121.0/24 origin: AS133430 descr: Islami Bank Bangladesh Limited Islami Bank Tower 40, Dilkusha C/A mnt-by: MAINT-IBBL-BD last-modified: 2019-11-21T07:05:57Z source: APNIC rpki-ov-state: valid route: 103.228.122.0/24 origin: AS133430 descr: Islami Bank Bangladesh Limited Islami Bank Tower 40, Dilkusha C/A mnt-by: MAINT-IBBL-BD last-modified: 2019-11-21T07:09:34Z source: APNIC rpki-ov-state: valid route: 103.228.123.0/24 descr: CMI IP Transit origin: AS133430 mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20200922 source: NTTCOM rpki-ov-state: valid route: 103.228.123.0/24 origin: AS133430 descr: Islami Bank Bangladesh Limited Islami Bank Tower 40, Dilkusha C/A mnt-by: MAINT-IBBL-BD last-modified: 2019-11-21T07:10:04Z source: APNIC rpki-ov-state: valid route: 103.228.123.0/24 descr: CMI (Customer Route) origin: AS133430 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20200922 source: RADB last-modified: 2023-11-13T16:01:53Z rpki-ov-state: valid