These entries are queried from radb.net using whois, you can try my project getting these.
:AS131381 route: 103.248.160.0/22 descr: Proxy-registered route object origin: AS131381 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140626 source: RADB last-modified: 2023-11-13T15:46:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.160.0/22 descr: TCHQ-VN origin: AS131381 notify: internet_tech [at] hanoitelecom.com mnt-by: MAINT-HANOITELECOM changed: trungnx [at] hanoitelecom.com 20130616 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.160.0/23 descr: Proxy-registered route object origin: AS131381 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140626 source: RADB last-modified: 2023-11-13T15:46:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.160.0/23 descr: TCHQ-VN origin: AS131381 notify: internet_tech [at] hanoitelecom.com mnt-by: MAINT-HANOITELECOM changed: trungnx [at] hanoitelecom.com 20130616 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.160.0/24 descr: Proxy-registered route object origin: AS131381 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140626 source: RADB last-modified: 2023-11-13T15:46:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.160.0/24 descr: TCHQ-VN origin: AS131381 notify: internet_tech [at] hanoitelecom.com mnt-by: MAINT-HANOITELECOM changed: trungnx [at] hanoitelecom.com 20130616 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.161.0/24 descr: Proxy-registered route object origin: AS131381 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140626 source: RADB last-modified: 2023-11-13T15:46:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.161.0/24 descr: TCHQ-VN origin: AS131381 notify: internet_tech [at] hanoitelecom.com mnt-by: MAINT-HANOITELECOM changed: trungnx [at] hanoitelecom.com 20130616 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.162.0/23 descr: Proxy-registered route object origin: AS131381 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140626 source: RADB last-modified: 2023-11-13T15:46:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.162.0/23 descr: TCHQ-VN origin: AS131381 notify: internet_tech [at] hanoitelecom.com mnt-by: MAINT-HANOITELECOM changed: trungnx [at] hanoitelecom.com 20130616 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.162.0/24 descr: Proxy-registered route object origin: AS131381 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140626 source: RADB last-modified: 2023-11-13T15:46:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.162.0/24 descr: TCHQ-VN origin: AS131381 notify: internet_tech [at] hanoitelecom.com mnt-by: MAINT-HANOITELECOM changed: trungnx [at] hanoitelecom.com 20130616 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.163.0/24 descr: Proxy-registered route object origin: AS131381 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140626 source: RADB last-modified: 2023-11-13T15:46:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.248.163.0/24 descr: TCHQ-VN origin: AS131381 notify: internet_tech [at] hanoitelecom.com mnt-by: MAINT-HANOITELECOM changed: trungnx [at] hanoitelecom.com 20130616 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source