These entries are queried from radb.net using whois, you can try my project getting these.
:AS9764 route: 103.27.148.0/24 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.27.148.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:17:23Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.27.149.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:18:27Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.128.0/18 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.128.0/19 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.128.0/19 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:19:03Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.128.0/24 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.129.0/24 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.130.0/24 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.131.0/24 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.144.0/20 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.160.0/19 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:19:30Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.160.0/19 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.160.0/20 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.179.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20151013 #02:38:17Z source: RADB last-modified: 2023-11-13T15:48:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.180.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20151013 #02:38:42Z source: RADB last-modified: 2023-11-13T15:48:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.181.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20151013 #02:39:05Z source: RADB last-modified: 2023-11-13T15:48:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.184.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20151013 #02:39:30Z source: RADB last-modified: 2023-11-13T15:48:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.185.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20151013 #02:39:55Z source: RADB last-modified: 2023-11-13T15:48:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.186.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20151013 #02:40:19Z source: RADB last-modified: 2023-11-13T15:48:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.187.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20151013 #02:40:43Z source: RADB last-modified: 2023-11-13T15:48:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.190.0/24 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 113.29.191.0/24 descr: Daum Corp. origin: AS9764 notify: redmae [at] daumcorp.com notify: ip-eng-routing [at] us.ntt.net notify: tech [at] ntt.net notify: korea-tec-gl [at] ntt.com mnt-by: MAINT-VERIO-KR changed: mh.choi [at] ntt.com 20140217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.160.0/19 descr: Daum Communication Corp. origin: AS9764 notify: network [at] daumcorp.com mnt-by: MAINT-DAUM changed: redmae [at] daumcorp.com 20140328 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.160.0/19 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:20:55Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.168.0/24 descr: Daum Communication Corp. origin: AS9764 notify: network [at] daumcorp.com mnt-by: MAINT-DAUM changed: redmae [at] daumcorp.com 20150224 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.168.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:22:14Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.169.0/24 descr: Daum Communication Corp. origin: AS9764 notify: network [at] daumcorp.com mnt-by: MAINT-DAUM changed: redmae [at] daumcorp.com 20150224 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.169.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:22:41Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.170.0/24 descr: Daum Communication Corp. origin: AS9764 notify: network [at] daumcorp.com mnt-by: MAINT-DAUM changed: redmae [at] daumcorp.com 20150224 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.170.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:26:40Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.171.0/24 descr: Daum Communication Corp. origin: AS9764 notify: network [at] daumcorp.com mnt-by: MAINT-DAUM changed: redmae [at] daumcorp.com 20150224 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.171.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:27:07Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.171.0/25 descr: Daum Communication Corp. origin: AS9764 notify: network [at] daumcorp.com mnt-by: MAINT-DAUM changed: redmae [at] daumcorp.com 20150508 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.171.0/25 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:27:34Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.171.128/25 descr: Daum Communication Corp. origin: AS9764 notify: network [at] daumcorp.com mnt-by: MAINT-DAUM changed: redmae [at] daumcorp.com 20150508 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.133.171.128/25 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:27:59Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.217.224.0/19 descr: Daum Communication Corp. origin: AS9764 notify: network [at] daumcorp.com mnt-by: MAINT-DAUM changed: redmae [at] daumcorp.com 20140328 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.217.224.0/19 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] daumkakao.com 20151002 #06:29:57Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.217.224.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20151013 #02:41:05Z source: RADB last-modified: 2023-11-13T15:48:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.217.225.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20151104 #04:52:08Z source: RADB last-modified: 2023-11-13T15:48:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.217.226.0/24 descr: Kakao Corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20151105 #05:12:30Z source: RADB last-modified: 2023-11-13T15:48:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.38.144.0/24 descr: Hanjin Infomation systems. origin: AS9764 mnt-by: MAINT-AS4766 changed: nockton1 [at] soback.kornet.net 20040804 source: RADB last-modified: 2023-11-13T16:15:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 220.71.56.0/24 descr: proxy for HANARO TELECOM route origin: AS9764 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 route6: 2404:4600::/32 descr: Daum Communication Corp. origin: AS9764 notify: network [at] daumcorp.com mnt-by: MAINT-DAUM changed: redmae [at] daumcorp.com 20140828 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2404:4600:3::/48 descr: kakao corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20160323 #09:43:56Z source: RADB last-modified: 2023-11-13T15:48:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2404:4600:4::/48 descr: kakao corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20160323 #08:17:55Z source: RADB last-modified: 2023-11-13T15:48:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2404:4600:5::/48 descr: kakao corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20160323 #08:18:58Z source: RADB last-modified: 2023-11-13T15:48:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2404:4600:fce::/48 descr: kakao corp. origin: AS9764 mnt-by: MAINT-AS10158 changed: netops [at] kakaocorp.com 20160323 #08:22:25Z source: RADB last-modified: 2023-11-13T15:48:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source