These entries are queried from radb.net using whois, you can try my project getting these.
:AS64075 route6: 2404:2980::/32 origin: AS64075 descr: MSL TechBD Limited Alif Technologies 604, South Goran Road- 30, Khilgoan mnt-by: MAINT-MSL-TECH-BD last-modified: 2019-09-20T17:07:28Z source: APNIC rpki-ov-state: valid route6: 2404:2980::/48 origin: AS64075 descr: MSL TechBD Limited Alif Technologies 604, South Goran Road- 30, Khilgoan mnt-by: MAINT-MSL-TECH-BD last-modified: 2019-09-20T17:08:21Z source: APNIC rpki-ov-state: valid route6: 2404:2980:1::/48 origin: AS64075 descr: MSL TechBD Limited Alif Technologies 604, South Goran Road- 30, Khilgoan mnt-by: MAINT-MSL-TECH-BD last-modified: 2019-09-20T17:08:37Z source: APNIC rpki-ov-state: valid route6: 2404:2980:2::/48 origin: AS64075 descr: MSL TechBD Limited Alif Technologies 604, South Goran Road- 30, Khilgoan mnt-by: MAINT-MSL-TECH-BD last-modified: 2019-09-20T17:08:53Z source: APNIC rpki-ov-state: valid route6: 2404:2980:3::/48 origin: AS64075 descr: MSL TechBD Limited Alif Technologies 604, South Goran Road- 30, Khilgoan mnt-by: MAINT-MSL-TECH-BD last-modified: 2019-09-20T17:09:08Z source: APNIC rpki-ov-state: valid route6: 2404:2980:4::/48 origin: AS64075 descr: MSL TechBD Limited Alif Technologies 604, South Goran Road- 30, Khilgoan mnt-by: MAINT-MSL-TECH-BD last-modified: 2019-09-20T17:09:40Z source: APNIC rpki-ov-state: valid route6: 2404:2980:5::/48 origin: AS64075 descr: MSL TechBD Limited Alif Technologies 604, South Goran Road- 30, Khilgoan mnt-by: MAINT-MSL-TECH-BD last-modified: 2019-09-20T17:09:55Z source: APNIC rpki-ov-state: valid route6: 2404:2980:6::/48 origin: AS64075 descr: MSL TechBD Limited Alif Technologies 604, South Goran Road- 30, Khilgoan mnt-by: MAINT-MSL-TECH-BD last-modified: 2019-09-20T17:10:13Z source: APNIC rpki-ov-state: valid