| 121.144.0.0/12 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.128.0.0/12 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.128.0.0/13 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.152.0.0/13 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.144.0.0/13 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.136.0.0/13 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.159.36.0/22 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.157.0.0/22 | AS9862RAYNET1-KR - GORayNet | No ROA | — | 5/31/2026 |
| 121.144.144.0/22 | AS9870DEUNET-AS-KR - DONG-EUI UNIVERSITY | No ROA | — | 5/31/2026 |
| 121.144.140.0/22 | AS9870DEUNET-AS-KR - DONG-EUI UNIVERSITY | No ROA | — | 5/31/2026 |
| 121.159.34.0/23 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.144.142.0/23 | AS9870DEUNET-AS-KR - DONG-EUI UNIVERSITY | No ROA | — | 5/31/2026 |
| 121.144.144.0/23 | AS9870DEUNET-AS-KR - DONG-EUI UNIVERSITY | No ROA | — | 5/31/2026 |
| 121.144.146.0/23 | AS9870DEUNET-AS-KR - DONG-EUI UNIVERSITY | No ROA | — | 5/31/2026 |
| 121.144.148.0/23 | AS9870DEUNET-AS-KR - DONG-EUI UNIVERSITY | No ROA | — | 5/31/2026 |
| 121.144.140.0/23 | AS9870DEUNET-AS-KR - DONG-EUI UNIVERSITY | No ROA | — | 5/31/2026 |
| 121.139.137.0/24 | AS3786LGDACOM-KR - LG DACOM Corporation | No ROA | — | 5/31/2026 |
| 121.137.151.0/24 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.159.243.0/24 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.159.242.0/24 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.156.153.0/24 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.156.150.0/24 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.150.50.0/24 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.150.39.0/24 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.141.42.0/24 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.137.185.0/24 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 5/31/2026 |
| 121.128.166.0/24 | AS4790CHOSUN-AS-KR-KR - Chosun ilbo Inc. | No ROA | — | 5/31/2026 |
| 121.128.28.0/24 | AS4790CHOSUN-AS-KR-KR - Chosun ilbo Inc. | No ROA | — | 5/31/2026 |
| 121.128.29.0/24 | AS4790CHOSUN-AS-KR-KR - Chosun ilbo Inc. | No ROA | — | 5/31/2026 |
| 121.138.156.0/24 | AS9273SICC-AS-KR - ITCENENTEC CO.,LTD. | No ROA | — | 5/31/2026 |
| 121.140.76.0/24 | AS9524HMC-AS-KR - Hyundai Autoever Corp. | No ROA | — | 5/31/2026 |
| 121.141.229.0/24 | AS9526KOSCOM-AS-KR-KR - KOSCOM | No ROA | — | 5/31/2026 |
| 121.141.60.0/24 | AS9526KOSCOM-AS-KR-KR - KOSCOM | No ROA | — | 5/31/2026 |
| 121.140.97.0/24 | AS9530SHINSEGAE-AS-KR - SHINSEGAE I C Co., Ltd. | No ROA | — | 5/31/2026 |
| 121.157.110.0/24 | AS9638NH-AS-KR - National Agricultural Cooperative federation | No ROA | — | 5/31/2026 |
| 121.157.108.0/24 | AS9638NH-AS-KR - National Agricultural Cooperative federation | No ROA | — | 5/31/2026 |
| 121.157.111.0/24 | AS9638NH-AS-KR - National Agricultural Cooperative federation | No ROA | — | 5/31/2026 |
| 121.128.55.0/24 | AS9647SEOULMETRO-AS-KR - Seoul Metropolitan Government | No ROA | — | 5/31/2026 |
| 121.128.219.0/24 | AS9647SEOULMETRO-AS-KR - Seoul Metropolitan Government | No ROA | — | 5/31/2026 |
| 121.130.46.0/24 | AS9684HANWHA-AS-KR - HANWHA Corp. Information Service div. | No ROA | — | 5/31/2026 |
| 121.130.47.0/24 | AS9684HANWHA-AS-KR - HANWHA Corp. Information Service div. | No ROA | — | 5/31/2026 |
| 121.135.246.0/24 | AS9696EDAS-AS-KR - Oscar Enterprise | No ROA | — | 5/31/2026 |
| 121.129.49.0/24 | AS9776KBSTAR-KR - KOOKMIN BANK | No ROA | — | 5/31/2026 |
| 121.141.101.0/24 | AS9776KBSTAR-KR - KOOKMIN BANK | No ROA | — | 5/31/2026 |
| 121.131.217.0/24 | AS9856WOORIWM-AS-KR-KR - WOORI Investment @ Securities | No ROA | — | 5/31/2026 |
| 121.157.4.0/24 | AS9862RAYNET1-KR - GORayNet | No ROA | — | 5/31/2026 |
| 121.144.149.0/24 | AS9870DEUNET-AS-KR - DONG-EUI UNIVERSITY | No ROA | — | 5/31/2026 |
| 121.144.148.0/24 | AS9870DEUNET-AS-KR - DONG-EUI UNIVERSITY | No ROA | — | 5/31/2026 |
| 121.143.242.0/24 | AS9968KYOBO-AS-KR - KYOBO Life Insurance Co., Ltd. | No ROA | — | 5/31/2026 |
| 121.131.7.0/24 | AS10040NICEVAN-AS-KR-KR - NICE Information Telecommunication, Inc | No ROA | — | 5/31/2026 |
| 121.150.105.0/24 | AS17588DAEGUBANK-AS-KR-KR - IM Bank | No ROA | — | 5/31/2026 |
| 121.156.69.0/24 | AS17834WOORICARD-AS-KR-KR - WOORICARD | No ROA | — | 5/31/2026 |
| 121.144.249.0/24 | AS18023KMU-AS-KR-KR - Korea Maritime and Ocean University | No ROA | — | 5/31/2026 |
| 121.144.250.0/24 | AS18023KMU-AS-KR-KR - Korea Maritime and Ocean University | No ROA | — | 5/31/2026 |
| 121.134.234.0/24 | AS18333ATNET-AS-KR-KR - at(Korea Argo-Fisheries Food Trade Corporation) | No ROA | — | 5/31/2026 |
| 121.139.137.0/24 | AS23591LS-AS-KR-KR - LS ITC | No ROA | — | 5/31/2026 |
| 121.128.224.0/24 | AS38122SGIC-AS-KR-KR - Seoul Guarantee Insurance Company | No ROA | — | 5/31/2026 |
| 121.128.225.0/24 | AS38122SGIC-AS-KR-KR - Seoul Guarantee Insurance Company | No ROA | — | 5/31/2026 |
| 121.131.145.0/24 | AS38126SCI-AS-KR-KR - Seoul Information Service Inc. | No ROA | — | 5/31/2026 |
| 121.133.198.0/24 | AS38394GOESN-AS-KR-KR - Gyeonggido Seongnam Office of Education | No ROA | — | 5/31/2026 |
| 121.133.199.0/24 | AS38395GOE-AS-KR-KR - GwangJuHaNam Office of Education | No ROA | — | 5/31/2026 |
| 121.133.203.0/24 | AS38399GOEYJ-AS-KR-KR - Gyeonggi-do Yeoju Office of Education | No ROA | — | 5/31/2026 |
| 121.133.209.0/24 | AS38412GOEIC-AS-KR-KR - Gyeonggi-Do Icheon office of Education | No ROA | — | 5/31/2026 |
| 121.135.55.0/24 | AS38697MOK9882-AS-KR-KR - Hankyong National Univercity | No ROA | — | 5/31/2026 |
| 121.135.56.0/24 | AS38697MOK9882-AS-KR-KR - Hankyong National Univercity | No ROA | — | 5/31/2026 |
| 121.135.54.0/24 | AS38697MOK9882-AS-KR-KR - Hankyong National Univercity | No ROA | — | 5/31/2026 |
| 121.135.53.0/24 | AS38697MOK9882-AS-KR-KR - Hankyong National Univercity | No ROA | — | 5/31/2026 |
| 121.133.126.0/24 | AS45401NICEVAN02-AS-KR-KR - NICE Information Telecommunication, Inc | No ROA | — | 5/31/2026 |
| 121.135.148.0/24 | AS46002PHIS-AS-KR-KR - PHIS | No ROA | — | 5/31/2026 |
| 121.135.147.0/24 | AS46002PHIS-AS-KR-KR - PHIS | No ROA | — | 5/31/2026 |
| 121.137.95.0/24 | AS46009YABESK-AS-KR-KR - YABESK | No ROA | — | 5/31/2026 |
| 121.137.107.0/24 | AS46009YABESK-AS-KR-KR - YABESK | No ROA | — | 5/31/2026 |
| 121.137.106.0/24 | AS46009YABESK-AS-KR-KR - YABESK | No ROA | — | 5/31/2026 |
| 121.137.105.0/24 | AS46009YABESK-AS-KR-KR - YABESK | No ROA | — | 5/31/2026 |
| 121.137.96.0/24 | AS46009YABESK-AS-KR-KR - YABESK | No ROA | — | 5/31/2026 |
| 121.137.94.0/24 | AS46009YABESK-AS-KR-KR - YABESK | No ROA | — | 5/31/2026 |
| 121.137.90.0/24 | AS46009YABESK-AS-KR-KR - YABESK | No ROA | — | 5/31/2026 |
| 121.137.89.0/24 | AS46009YABESK-AS-KR-KR - YABESK | No ROA | — | 5/31/2026 |
| 121.137.88.0/24 | AS46009YABESK-AS-KR-KR - YABESK | No ROA | — | 5/31/2026 |
| 121.137.87.0/24 | AS46009YABESK-AS-KR-KR - YABESK | No ROA | — | 5/31/2026 |
| 121.140.137.0/24 | AS55592KDT-AS-KR-KR - Korea Data Telecommunication Co., Ltd. | No ROA | — | 5/31/2026 |
| 121.140.50.0/24 | AS55592KDT-AS-KR-KR - Korea Data Telecommunication Co., Ltd. | No ROA | — | 5/31/2026 |
| 121.140.104.0/24 | AS55592KDT-AS-KR-KR - Korea Data Telecommunication Co., Ltd. | No ROA | — | 5/31/2026 |
| 121.140.118.0/24 | AS55592KDT-AS-KR-KR - Korea Data Telecommunication Co., Ltd. | No ROA | — | 5/31/2026 |
| 121.156.64.0/24 | AS55593NETMARBLE-AS-KR-KR - netmarble | No ROA | — | 5/31/2026 |
| 121.138.30.0/24 | AS55630KSNET-AS-KR-KR - KSNET.Inc | No ROA | — | 5/31/2026 |
| 121.138.29.0/24 | AS55630KSNET-AS-KR-KR - KSNET.Inc | No ROA | — | 5/31/2026 |
| 121.151.96.0/24 | AS131792DGBDRCENTER-AS-KR-KR - IM Bank | No ROA | — | 5/31/2026 |
| 121.131.216.0/24 | AS152214KOREANAIRLINES-AS-KR-KR - Korean Air Lines | No ROA | — | 5/31/2026 |
| 121.128.97.0/24 | AS152214KOREANAIRLINES-AS-KR-KR - Korean Air Lines | No ROA | — | 5/31/2026 |