These entries are queried from radb.net using whois, you can try my project getting these.
:AS56141 route: 49.156.52.0/22 descr: DSP - Da Nang - Viet Nam origin: AS56141 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20111031 source: NTTCOM rpki-ov-state: valid route: 49.156.52.0/22 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:24:29Z source: APNIC rpki-ov-state: valid route: 49.156.52.0/22 descr: CNTT-Da Nang Viet Nam origin: AS56141 admin-c: ATD-70 tech-c: LPC-72 mnt-by: MAINT-AS18403 changed: netadmin [at] fpt.vn 20120608 #10:42:59Z source: RADB last-modified: 2023-11-13T15:42:43Z rpki-ov-state: valid route: 49.156.52.0/23 descr: Proxy-registered route object origin: AS56141 remarks: This is a HGC customer route-object remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found. remarks: remarks: Please contact radb [at] hutchcity.com if you have any remarks: questions regarding this object. notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20190226 source: NTTCOM rpki-ov-state: valid route: 49.156.52.0/23 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 49.156.52.0/23 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:24:31Z source: APNIC rpki-ov-state: valid route: 49.156.52.0/24 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 49.156.52.0/24 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20131120 source: NTTCOM rpki-ov-state: valid route: 49.156.52.0/24 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:24:33Z source: APNIC rpki-ov-state: valid route: 49.156.53.0/24 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20131120 source: NTTCOM rpki-ov-state: valid route: 49.156.53.0/24 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 49.156.53.0/24 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:24:35Z source: APNIC rpki-ov-state: valid route: 49.156.54.0/23 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:24:37Z source: APNIC rpki-ov-state: valid route: 49.156.54.0/23 descr: Proxy-registered route object origin: AS56141 remarks: This is a HGC customer route-object remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found. remarks: remarks: Please contact radb [at] hutchcity.com if you have any remarks: questions regarding this object. notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20190226 source: NTTCOM rpki-ov-state: valid route: 49.156.54.0/23 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 49.156.54.0/24 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 49.156.54.0/24 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:24:39Z source: APNIC rpki-ov-state: valid route: 49.156.54.0/24 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20131120 source: NTTCOM rpki-ov-state: valid route: 49.156.55.0/24 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 49.156.55.0/24 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:24:41Z source: APNIC rpki-ov-state: valid route: 49.156.55.0/24 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20131120 source: NTTCOM rpki-ov-state: valid route: 103.101.76.0/22 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 103.101.76.0/22 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:25:23Z source: APNIC rpki-ov-state: valid route: 103.101.76.0/22 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip [at] viettel.com.vn 20171012 source: NTTCOM rpki-ov-state: valid route: 103.101.76.0/23 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 103.101.76.0/23 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip [at] viettel.com.vn 20171012 source: NTTCOM rpki-ov-state: valid route: 103.101.76.0/23 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:25:31Z source: APNIC rpki-ov-state: valid route: 103.101.76.0/24 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip [at] viettel.com.vn 20171012 source: NTTCOM rpki-ov-state: valid route: 103.101.76.0/24 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:25:34Z source: APNIC rpki-ov-state: valid route: 103.101.76.0/24 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 103.101.77.0/24 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 103.101.77.0/24 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip [at] viettel.com.vn 20171012 source: NTTCOM rpki-ov-state: valid route: 103.101.77.0/24 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:25:36Z source: APNIC rpki-ov-state: valid route: 103.101.78.0/23 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip [at] viettel.com.vn 20171012 source: NTTCOM rpki-ov-state: valid route: 103.101.78.0/23 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 103.101.78.0/23 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:25:38Z source: APNIC rpki-ov-state: valid route: 103.101.78.0/24 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip [at] viettel.com.vn 20171012 source: NTTCOM rpki-ov-state: valid route: 103.101.78.0/24 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 103.101.78.0/24 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:25:40Z source: APNIC rpki-ov-state: valid route: 103.101.79.0/24 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:25:42Z source: APNIC rpki-ov-state: valid route: 103.101.79.0/24 descr: CUSTOMER OF VIETTEL origin: AS56141 remarks: this is non-portable space, no exceptions notify: minhna4 [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip [at] viettel.com.vn 20171012 source: NTTCOM rpki-ov-state: valid route: 103.101.79.0/24 descr: Proxy-registered route object origin: AS56141 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20190226 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route6: 2001:df2:9b00::/48 descr: Danang ICT Infrastructure Development Center origin: AS56141 notify: tdm [at] htc-itc.com.vn mnt-by: MAINT-HANOITELECOM changed: quan.vh [at] htc-itc.com.vn 20190402 source: NTTCOM rpki-ov-state: valid route6: 2001:df2:9b00::/48 descr: DSP-VN origin: AS56141 mnt-by: MAINT-VN-VNNIC last-modified: 2022-12-06T07:26:17Z source: APNIC rpki-ov-state: valid