These entries are queried from radb.net using whois, you can try my project getting these.
:AS134780 route: 103.149.0.0/23 origin: AS134780 descr: Low Speed Network mnt-by: MAINT-LOWSPEEDNETWORK-BD last-modified: 2021-10-07T17:46:34Z country: BD mnt-routes: MAINT-LOWSPEEDNETWORK-BD mnt-lower: MAINT-LOWSPEEDNETWORK-BD source: APNIC rpki-ov-state: valid route: 103.149.1.0/24 origin: AS134780 descr: Low Speed Network mnt-by: MAINT-LOWSPEEDNETWORK-BD last-modified: 2021-10-07T17:47:23Z country: BD mnt-routes: MAINT-LOWSPEEDNETWORK-BD mnt-lower: MAINT-LOWSPEEDNETWORK-BD source: APNIC rpki-ov-state: valid