These entries are queried from radb.net using whois, you can try my project getting these.
:AS63747 route: 45.252.240.0/22 descr: CP16-The Authority of Central Post origin: AS63747 mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T07:26:28Z source: APNIC rpki-ov-state: valid route: 45.252.240.0/23 descr: CP16-The Authority of Central Post origin: AS63747 mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T07:26:28Z source: APNIC rpki-ov-state: valid route: 45.252.240.0/24 descr: CP16-The Authority of Central Post origin: AS63747 mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T07:26:52Z source: APNIC rpki-ov-state: valid route: 45.252.240.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 45.252.240.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 45.252.241.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 45.252.241.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 45.252.241.0/24 descr: CP16-The Authority of Central Post origin: AS63747 mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T07:27:22Z source: APNIC rpki-ov-state: valid route: 45.252.242.0/23 descr: CP16-The Authority of Central Post origin: AS63747 mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T07:26:29Z source: APNIC rpki-ov-state: valid route: 45.252.242.0/24 descr: CP16-The Authority of Central Post origin: AS63747 mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T07:27:48Z source: APNIC rpki-ov-state: valid route: 45.252.242.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 45.252.242.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 45.252.243.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 45.252.243.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 45.252.243.0/24 descr: CP16-The Authority of Central Post origin: AS63747 mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T07:28:08Z source: APNIC rpki-ov-state: valid route: 45.252.244.0/22 descr: CPT-VN last-modified: 2017-10-18T03:18:22Z origin: AS63747 mnt-by: MAINT-VN-VNNIC source: APNIC rpki-ov-state: valid route: 45.252.244.0/23 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-17T07:51:46Z source: APNIC rpki-ov-state: valid route: 45.252.244.0/24 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-17T07:51:47Z source: APNIC rpki-ov-state: valid route: 45.252.244.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 45.252.244.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 45.252.245.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 45.252.245.0/24 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-17T07:51:47Z source: APNIC rpki-ov-state: valid route: 45.252.245.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 45.252.246.0/23 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-17T07:51:47Z source: APNIC rpki-ov-state: valid route: 45.252.246.0/24 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-17T07:51:48Z source: APNIC rpki-ov-state: valid route: 45.252.246.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 45.252.246.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 45.252.247.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 45.252.247.0/24 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-17T07:51:48Z source: APNIC rpki-ov-state: valid route: 45.252.247.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 103.221.224.0/22 descr: CPT-VN descr: Central Post and Telecommunication (CPT) origin: AS63747 mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:25:11Z source: APNIC rpki-ov-state: valid route: 103.221.224.0/23 origin: AS63747 descr: CPT-VN descr: Central Post and Telecommunication (CPT) mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:25:48Z source: APNIC rpki-ov-state: valid route: 103.221.224.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 103.221.224.0/24 origin: AS63747 descr: CPT-VN descr: Central Post and Telecommunication (CPT) mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:26:09Z source: APNIC rpki-ov-state: valid route: 103.221.224.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 103.221.225.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 103.221.225.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 103.221.225.0/24 origin: AS63747 descr: CPT-VN descr: Central Post and Telecommunication (CPT) mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:26:36Z source: APNIC rpki-ov-state: valid route: 103.221.226.0/23 origin: AS63747 descr: CPT-VN descr: Central Post and Telecommunication (CPT) mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:27:00Z source: APNIC rpki-ov-state: valid route: 103.221.226.0/24 origin: AS63747 descr: CPT-VN descr: Central Post and Telecommunication (CPT) mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:27:25Z source: APNIC rpki-ov-state: valid route: 103.221.226.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 103.221.226.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 103.221.227.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 103.221.227.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 103.221.227.0/24 origin: AS63747 descr: CPT-VN descr: Central Post and Telecommunication (CPT) mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:27:46Z source: APNIC rpki-ov-state: valid route: 103.221.228.0/22 descr: BUUDIENCP16-VN last-modified: 2017-10-18T03:21:00Z origin: AS63747 mnt-by: MAINT-VN-VNNIC source: APNIC rpki-ov-state: valid route: 103.221.228.0/23 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:21:42Z source: APNIC rpki-ov-state: valid route: 103.221.228.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 103.221.228.0/24 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:21:42Z source: APNIC rpki-ov-state: valid route: 103.221.228.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 103.221.229.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 103.221.229.0/24 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:21:42Z source: APNIC rpki-ov-state: valid route: 103.221.229.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 103.221.230.0/23 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:21:43Z source: APNIC rpki-ov-state: valid route: 103.221.230.0/24 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:21:43Z source: APNIC rpki-ov-state: valid route: 103.221.230.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 103.221.230.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 103.221.231.0/24 descr: CMI (Customer Route) origin: AS63747 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 103.221.231.0/24 descr: CMI IP Transit origin: AS63747 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support [at] cmi.chinamobile.com 20180620 source: NTTCOM rpki-ov-state: valid route: 103.221.231.0/24 origin: AS63747 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:21:43Z source: APNIC rpki-ov-state: valid route6: 2001:df2:ce00::/48 descr: Central Post and Telecommunication (CPT) origin: AS63747 mnt-by: MAINT-VN-VNNIC last-modified: 2020-03-19T04:23:05Z source: APNIC rpki-ov-state: valid route6: 2405:53c0::/32 descr: BUUDIENCP16-VN origin: AS63747 mnt-by: MAINT-VN-VNNIC last-modified: 2022-11-16T03:02:47Z source: APNIC rpki-ov-state: valid