These entries are queried from radb.net using whois, you can try my project getting these.
:AS38252 route: 202.94.88.0/24 descr: IACP Company - VIET NAM origin: AS38252 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110516 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.94.89.0/24 descr: IACP Company - VIET NAM origin: AS38252 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110516 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source