These entries are queried from radb.net using whois, you can try my project getting these.
:AS55406 route: 45.251.56.0/22 descr: Route object of HRC 45.251.56.0/22 origin: AS55406 mnt-by: MAINT-HRCTECH-01-BD last-modified: 2016-05-25T06:02:21Z source: APNIC rpki-ov-state: valid route: 45.251.56.0/24 descr: Route object of HRC 45.251.56.0/24 origin: AS55406 mnt-by: MAINT-HRCTECH-01-BD last-modified: 2016-05-25T06:06:55Z source: APNIC rpki-ov-state: valid route: 45.251.57.0/24 descr: Route object of HRC 45.251.57.0/24 origin: AS55406 mnt-by: MAINT-HRCTECH-01-BD last-modified: 2016-05-25T06:07:21Z source: APNIC rpki-ov-state: valid route: 45.251.58.0/24 descr: Route object of HRC 45.251.58.0/24 origin: AS55406 mnt-by: MAINT-HRCTECH-01-BD last-modified: 2016-05-25T06:07:33Z source: APNIC rpki-ov-state: valid route: 45.251.59.0/24 descr: Route object of HRC 45.251.59.0/24 origin: AS55406 mnt-by: MAINT-HRCTECH-01-BD last-modified: 2016-05-25T06:07:44Z source: APNIC rpki-ov-state: valid route: 103.20.52.0/22 origin: AS55406 descr: HRC Technologies Ltd Haque Tower, 11th Floor JA-28/8/D, Mohakhali C/A mnt-by: MAINT-HRCTECH-01-BD last-modified: 2019-11-24T09:09:34Z source: APNIC rpki-ov-state: valid route: 103.20.52.0/24 origin: AS55406 descr: HRC Technologies Ltd Haque Tower, 11th Floor JA-28/8/D, Mohakhali C/A mnt-by: MAINT-HRCTECH-01-BD last-modified: 2019-11-24T09:09:35Z source: APNIC rpki-ov-state: valid route: 103.20.53.0/24 origin: AS55406 descr: HRC Technologies Ltd Haque Tower, 11th Floor JA-28/8/D, Mohakhali C/A mnt-by: MAINT-HRCTECH-01-BD last-modified: 2019-11-24T09:09:35Z source: APNIC rpki-ov-state: valid route: 103.20.54.0/24 origin: AS55406 descr: HRC Technologies Ltd Haque Tower, 11th Floor JA-28/8/D, Mohakhali C/A mnt-by: MAINT-HRCTECH-01-BD last-modified: 2019-11-24T09:09:35Z source: APNIC rpki-ov-state: valid route: 103.20.55.0/24 origin: AS55406 descr: HRC Technologies Ltd Haque Tower, 11th Floor JA-28/8/D, Mohakhali C/A mnt-by: MAINT-HRCTECH-01-BD last-modified: 2019-11-24T09:09:36Z source: APNIC rpki-ov-state: valid route: 103.254.84.0/22 descr: Route Object for HRCTech 2 origin: AS55406 country: BD mnt-lower: MAINT-HRCTECH-01-BD mnt-routes: MAINT-HRCTECH-01-BD mnt-by: MAINT-HRCTECH-01-BD last-modified: 2013-12-03T23:54:31Z source: APNIC rpki-ov-state: valid route: 103.254.84.0/24 descr: HRCTech IPv4 Block 5 origin: AS55406 country: BD mnt-lower: MAINT-HRCTECH-01-BD mnt-routes: MAINT-HRCTECH-01-BD mnt-by: MAINT-HRCTECH-01-BD last-modified: 2013-12-03T23:43:40Z source: APNIC rpki-ov-state: valid route: 103.254.85.0/24 descr: HRCTech IPv4 Block 6 origin: AS55406 country: BD mnt-lower: MAINT-HRCTECH-01-BD mnt-routes: MAINT-HRCTECH-01-BD mnt-by: MAINT-HRCTECH-01-BD last-modified: 2013-12-03T23:43:57Z source: APNIC rpki-ov-state: valid route: 103.254.86.0/24 descr: HRCTech IPv4 Block 7 origin: AS55406 country: BD mnt-lower: MAINT-HRCTECH-01-BD mnt-routes: MAINT-HRCTECH-01-BD mnt-by: MAINT-HRCTECH-01-BD last-modified: 2013-12-03T23:44:13Z source: APNIC rpki-ov-state: valid route: 103.254.87.0/24 descr: HRCTech IPv4 Block 8 origin: AS55406 country: BD mnt-lower: MAINT-HRCTECH-01-BD mnt-routes: MAINT-HRCTECH-01-BD mnt-by: MAINT-HRCTECH-01-BD last-modified: 2013-12-03T23:44:25Z source: APNIC rpki-ov-state: valid route: 182.16.156.0/22 descr: Route Object for HRC Tech origin: AS55406 mnt-by: MAINT-HRCTECH-01-BD last-modified: 2010-02-09T07:15:06Z source: APNIC rpki-ov-state: valid route: 182.16.156.0/24 descr: HRCTech IPv4 Block 1 origin: AS55406 country: BD mnt-lower: MAINT-HRCTECH-01-BD mnt-routes: MAINT-HRCTECH-01-BD mnt-by: MAINT-HRCTECH-01-BD last-modified: 2012-11-29T04:54:03Z source: APNIC rpki-ov-state: valid route: 182.16.157.0/24 descr: HRCTech IPv4 Block 2 origin: AS55406 country: BD mnt-lower: MAINT-HRCTECH-01-BD mnt-routes: MAINT-HRCTECH-01-BD mnt-by: MAINT-HRCTECH-01-BD last-modified: 2012-11-29T04:54:44Z source: APNIC rpki-ov-state: valid route: 182.16.158.0/24 descr: HRCTech IPv4 Block 3 origin: AS55406 country: BD mnt-lower: MAINT-HRCTECH-01-BD mnt-routes: MAINT-HRCTECH-01-BD mnt-by: MAINT-HRCTECH-01-BD last-modified: 2012-11-29T04:54:55Z source: APNIC rpki-ov-state: valid route: 182.16.159.0/24 descr: HRCTech IPv4 Block 4 origin: AS55406 country: BD mnt-lower: MAINT-HRCTECH-01-BD mnt-routes: MAINT-HRCTECH-01-BD mnt-by: MAINT-HRCTECH-01-BD last-modified: 2012-11-29T04:55:04Z source: APNIC rpki-ov-state: valid route6: 2405:f200::/32 descr: Route Object for HRC Tech IPv6 block origin: AS55406 mnt-lower: MAINT-HRCTECH-01-BD mnt-routes: MAINT-HRCTECH-01-BD mnt-by: MAINT-HRCTECH-01-BD last-modified: 2011-04-23T11:27:33Z source: APNIC rpki-ov-state: valid