These entries are queried from radb.net using whois, you can try my project getting these.
:AS136558 route: 103.92.208.0/24 country: BD origin: AS136558 descr: MUX TECHNOLOGIES mnt-by: MAINT-MUXTECHNOLOGIES-BD last-modified: 2017-05-20T13:46:42Z source: APNIC rpki-ov-state: valid route: 103.101.53.0/24 descr: MUX TECHNOLOGIES origin: AS136558 mnt-by: MAINT-MUXTECHNOLOGIES-BD last-modified: 2017-09-24T12:43:39Z source: APNIC rpki-ov-state: valid route: 103.101.54.0/23 origin: AS136558 descr: Mohammed Tayab 225/A, Chowdhury Center-8th Floor. Opposite to Board of Intermediate and Secondary Education. Muradpur, Chittagong mnt-by: MAINT-MUXTECHNOLOGIES-BD last-modified: 2019-03-13T11:01:13Z source: APNIC rpki-ov-state: valid route: 103.101.54.0/24 origin: AS136558 descr: Mohammed Tayab 225/A, Chowdhury Center-8th Floor. Opposite to Board of Intermediate and Secondary Education. Muradpur, Chittagong mnt-by: MAINT-MUXTECHNOLOGIES-BD last-modified: 2019-03-13T10:59:18Z source: APNIC rpki-ov-state: valid route: 103.101.55.0/24 origin: AS136558 descr: Mohammed Tayab 225/A, Chowdhury Center-8th Floor. Opposite to Board of Intermediate and Secondary Education. Muradpur, Chittagong mnt-by: MAINT-MUXTECHNOLOGIES-BD last-modified: 2019-03-13T10:59:41Z source: APNIC rpki-ov-state: valid route6: 2405:65c0::/32 origin: AS136558 descr: MUX mnt-by: MAINT-MUXTECHNOLOGIES-BD last-modified: 2020-07-29T09:55:33Z source: APNIC rpki-ov-state: valid