These entries are queried from radb.net using whois, you can try my project getting these.
:AS138320 route: 103.122.252.0/22 origin: AS138320 descr: Falcon Link mnt-by: MAINT-FALCONLINK1-BD last-modified: 2021-03-18T04:56:49Z country: BD source: APNIC rpki-ov-state: valid route: 103.122.252.0/23 origin: AS138320 descr: Falcon Link mnt-by: MAINT-FALCONLINK1-BD last-modified: 2021-03-18T04:57:28Z country: BD source: APNIC rpki-ov-state: valid route: 103.122.252.0/24 origin: AS138320 descr: Falcon Link mnt-by: MAINT-FALCONLINK1-BD last-modified: 2021-03-18T05:02:03Z country: BD source: APNIC rpki-ov-state: valid route: 103.122.253.0/24 origin: AS138320 descr: Falcon Link mnt-by: MAINT-FALCONLINK1-BD last-modified: 2021-03-18T05:02:42Z country: BD source: APNIC rpki-ov-state: valid route: 103.122.254.0/23 origin: AS138320 descr: Falcon Link mnt-by: MAINT-FALCONLINK1-BD last-modified: 2021-03-18T05:09:23Z country: BD source: APNIC rpki-ov-state: valid route: 103.122.254.0/24 origin: AS138320 descr: Falcon Link mnt-by: MAINT-FALCONLINK1-BD last-modified: 2021-03-18T05:11:43Z country: BD source: APNIC rpki-ov-state: valid route: 103.122.255.0/24 origin: AS138320 descr: Falcon Link mnt-by: MAINT-FALCONLINK1-BD last-modified: 2021-03-18T05:00:08Z country: BD source: APNIC rpki-ov-state: valid route6: 2403:98c0::/32 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:50:59Z source: APNIC rpki-ov-state: valid route6: 2403:98c0::/33 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:02Z source: APNIC rpki-ov-state: valid route6: 2403:98c0::/34 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:03Z source: APNIC rpki-ov-state: valid route6: 2403:98c0::/35 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:05Z source: APNIC rpki-ov-state: valid route6: 2403:98c0::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:06Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:1000::/36 origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T09:15:08Z country: BD source: APNIC rpki-ov-state: valid route6: 2403:98c0:2000::/35 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:08Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:2000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:09Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:3000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:11Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:4000::/34 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:12Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:4000::/35 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:13Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:4000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:14Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:5000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:16Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:6000::/35 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:17Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:6000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:18Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:7000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:19Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:8000::/33 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:21Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:8000::/34 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:23Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:8000::/35 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:24Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:8000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:25Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:9000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:26Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:a000::/35 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:27Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:a000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:28Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:b000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:30Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:c000::/34 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:31Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:c000::/35 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:32Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:c000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:33Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:d000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:34Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:e000::/35 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:36Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:e000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:37Z source: APNIC rpki-ov-state: valid route6: 2403:98c0:f000::/36 country: BD origin: AS138320 descr: Shamsuzzaman Mamun Kitabi Plaza (3rd Floor), Mawnachowrasta, Sreepur, Gazipur mnt-by: MAINT-FALCONLINK1-BD last-modified: 2020-10-21T08:51:38Z source: APNIC rpki-ov-state: valid