These entries are queried from radb.net using whois, you can try my project getting these.
:AS137543 route: 103.112.156.0/22 origin: AS137543 descr: Mohammad Yousuf 28, Shanti Nagar, Paltan mnt-by: MAINT-NEWBANGLASPEED-BD last-modified: 2018-05-15T19:20:43Z source: APNIC rpki-ov-state: valid route: 103.112.156.0/23 origin: AS137543 descr: Mohammad Yousuf 28, Shanti Nagar, Paltan mnt-by: MAINT-NEWBANGLASPEED-BD last-modified: 2018-05-15T19:20:43Z source: APNIC rpki-ov-state: valid route: 103.112.156.0/24 origin: AS137543 descr: Mohammad Yousuf 28, Shanti Nagar, Paltan mnt-by: MAINT-NEWBANGLASPEED-BD last-modified: 2018-05-15T19:20:43Z source: APNIC rpki-ov-state: valid route: 103.112.157.0/24 origin: AS137543 descr: Mohammad Yousuf 28, Shanti Nagar, Paltan mnt-by: MAINT-NEWBANGLASPEED-BD last-modified: 2018-05-15T19:20:43Z source: APNIC rpki-ov-state: valid route: 103.112.158.0/23 origin: AS137543 descr: Mohammad Yousuf 28, Shanti Nagar, Paltan mnt-by: MAINT-NEWBANGLASPEED-BD last-modified: 2018-05-15T19:20:43Z source: APNIC rpki-ov-state: valid route: 103.112.158.0/24 origin: AS137543 descr: Mohammad Yousuf 28, Shanti Nagar, Paltan mnt-by: MAINT-NEWBANGLASPEED-BD last-modified: 2018-05-15T19:20:44Z source: APNIC rpki-ov-state: valid route: 103.112.159.0/24 origin: AS137543 descr: Mohammad Yousuf 28, Shanti Nagar, Paltan mnt-by: MAINT-NEWBANGLASPEED-BD last-modified: 2018-05-15T19:20:44Z source: APNIC rpki-ov-state: valid route6: 2402:abc0::/32 country: BD origin: AS137543 descr: Mohammad Yousuf 28, Shanti Nagar, Paltan mnt-by: MAINT-NEWBANGLASPEED-BD last-modified: 2018-05-15T19:18:07Z source: APNIC rpki-ov-state: valid route6: 2402:abc0::/33 country: BD origin: AS137543 descr: Mohammad Yousuf 28, Shanti Nagar, Paltan mnt-by: MAINT-NEWBANGLASPEED-BD last-modified: 2018-05-15T19:18:08Z source: APNIC rpki-ov-state: valid route6: 2402:abc0:8000::/33 country: BD origin: AS137543 descr: Mohammad Yousuf 28, Shanti Nagar, Paltan mnt-by: MAINT-NEWBANGLASPEED-BD last-modified: 2018-05-15T19:18:08Z source: APNIC rpki-ov-state: valid