These entries are queried from radb.net using whois, you can try my project getting these.
:AS7558 route: 210.115.192.0/19 descr: proxy for HANARO TELECOM route origin: AS7558 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20080504 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.115.192.0/19 descr: contact blueland [at] mail.kbs.co.kr if necessary contact song [at] mail.kbs.co.kr if necessary contact unknown [at] unknown.com if necessary origin: AS7558 mnt-by: MAINT-AS3786 changed: ysjeon7 [at] bora.net 20000410 source: RADB last-modified: 2023-11-13T16:09:29Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.115.198.0/24 descr: proxy for HANARO TELECOM route origin: AS7558 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20080504 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.115.199.0/24 descr: proxy for HANARO TELECOM route origin: AS7558 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20080504 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.115.200.0/24 descr: proxy for HANARO TELECOM route origin: AS7558 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20080504 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.115.220.0/24 descr: proxy for HANARO TELECOM route origin: AS7558 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20081007 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source