These entries are queried from radb.net using whois, you can try my project getting these.
:AS135962 route: 103.135.28.0/22 origin: AS135962 descr: Dong Duong Securitites Incorporation admin-c: ATD70 tech-c: LPC72 mnt-by: MAINT-AS18403 changed: netadmin [at] fpt.vn 20190303 #02:07:06Z source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: valid route: 103.135.28.0/22 descr: AIS Securitites Joint Stock Company descr: AIS Securitites Joint Stock Company origin: AS135962 mnt-by: MAINT-VN-VNNIC last-modified: 2020-09-14T10:03:11Z source: APNIC rpki-ov-state: valid route: 103.135.28.0/23 descr: AIS Securitites Joint Stock Company descr: AIS Securitites Joint Stock Company origin: AS135962 mnt-by: MAINT-VN-VNNIC last-modified: 2020-09-14T10:03:12Z source: APNIC rpki-ov-state: valid route: 103.135.28.0/24 descr: AIS Securitites Joint Stock Company descr: AIS Securitites Joint Stock Company origin: AS135962 mnt-by: MAINT-VN-VNNIC last-modified: 2020-09-14T10:03:16Z source: APNIC rpki-ov-state: valid route: 103.135.28.0/24 origin: AS135962 descr: VNPT-Customer-AIS-AS-VN mnt-by: MAINT-AS45899 changed: radb [at] vnpt.vn 20221128 notify: ktm.ip [at] vnpt.vn source: RADB last-modified: 2023-11-13T16:13:09Z rpki-ov-state: valid route: 103.135.29.0/24 descr: AIS Securitites Joint Stock Company descr: AIS Securitites Joint Stock Company origin: AS135962 mnt-by: MAINT-VN-VNNIC last-modified: 2020-09-14T10:03:18Z source: APNIC rpki-ov-state: valid route: 103.135.30.0/23 descr: AIS Securitites Joint Stock Company descr: AIS Securitites Joint Stock Company origin: AS135962 mnt-by: MAINT-VN-VNNIC last-modified: 2020-09-14T10:03:19Z source: APNIC rpki-ov-state: valid route: 103.135.30.0/24 descr: AIS Securitites Joint Stock Company descr: AIS Securitites Joint Stock Company origin: AS135962 mnt-by: MAINT-VN-VNNIC last-modified: 2020-09-14T10:03:21Z source: APNIC rpki-ov-state: valid route: 103.135.31.0/24 descr: AIS Securitites Joint Stock Company descr: AIS Securitites Joint Stock Company origin: AS135962 mnt-by: MAINT-VN-VNNIC last-modified: 2020-09-14T10:03:22Z source: APNIC rpki-ov-state: valid