South Korea
Autonomous systems and IP prefixes registered in South Korea.
Registered ASNs
170
IPv4 Prefixes
9,350
IPv6 Prefixes
949
Largest Networksby registered prefixes
| # | ASN | Name | Prefixes |
|---|---|---|---|
| 1 | AS4766 | APNICKIXS-AS-KR-KR - Korea Telecom | 265 |
| 2 | AS3786 | APNICLGDACOM-KR - LG DACOM Corporation | 139 |
| 3 | AS4670 | APNICHYUNDAI-KR - Shinbiro | 40 |
| 4 | AS138195 | APNICMOACKCOLTD-AS-AP - MOACK.Co.LTD | 27 |
| 5 | AS4665 | APNICYONSEI-AS-KR-KR - Yonsei University | 22 |
| 6 | AS1237 | APNICKREONET-AS-KR-KR - KISTI | 20 |
| 7 | AS6619 | APNICSAMSUNGSDS-AS-KR-KR - SamsungSDS Inc. | 17 |
| 8 | AS9316 | APNICDACOM-PUBNETPLUS-AS-KR-KR - DACOM-PUBNETPLUS | 17 |
| 9 | AS135120 | APNICPROJECTELIV-AS-AP - PROJECT ELIV | 16 |
| 10 | AS4663 | APNICELIMNET-AS-KR-KR - ELIMNET, INC. | 15 |
| 11 | AS139648 | APNICPACKETSTREAM-AS-AP - PacketStream Korea | 12 |
| 12 | AS4668 | APNICLGNET-AS-KR-KR - LG CNS | 11 |
| 13 | AS9286 | APNICKINXIDC-AS-KR-KR - KINX | 11 |
| 14 | AS149522 | APNICONECUBITCOLTD-AS-AP - OneCubit Co., Ltd. | 10 |
| 15 | AS210576 | RIPENCCAS-YAGUMYAGUM Sangmin Lee trading as YAGUMYAGUM | 10 |
| 16 | AS7557 | APNICKTNET-AS-KR - Korea Trade Network | 9 |
| 17 | AS45560 | APNICTOPNET-IPT-AS-AP - TOPNET. IP Transit AS | 8 |
| 18 | AS9270 | APNICAPAN-KR-AS-KR - National Infomation Society Agency | 7 |
| 19 | AS4961 | APNICDISC-AS-KR-KR - Daewoo Information Systems | 6 |
| 20 | AS151349 | APNICYUKI-NET-AS-AP - Yuki Network Ltd | 6 |
| 21 | AS202002 | RIPENCCJIHUN-AS Jihun Lee | 6 |
| 22 | AS214510 | RIPENCCWEBTACULAR Rhajune Park | 6 |
| 23 | AS18401 | APNICAS18401-AS-KR-KR - DAEGU UNIVERSITY | 5 |
| 24 | AS200140 | RIPENCCHanseung-Kim Hanseung Kim | 4 |
| 25 | AS202437 | RIPENCCParkAppsHouseIDC Heo Jun trading as ParkAppsHouse | 4 |
| 26 | AS215343 | RIPENCCMINJAE-AS Minjae Kim | 4 |
| 27 | AS2385 | APNICKRIBB-AS-KR-KR - KRIBB(Korea Research Institute of Bioscience Biotechnology) | 3 |
| 28 | AS133463 | APNICHOJUNGCOLTD-AS-AP - HO JUNG CO., LTD. | 3 |
| 29 | AS138380 | APNICVOLVO-GROUP-IT-APNIC-AS-AP - VOLVO GROUP KOREA CO LTD, Construction Equipment Seoul | 3 |
| 30 | AS142262 | APNICMCL-AS-AP - 434480 | 3 |
| 31 | AS142273 | APNICDRKL-AS-AP - Digital Realty Korea Ltd. | 3 |
| 32 | AS153589 | APNICVOLVO-GROUP-IT-APNIC-AS-AP - VOLVO GROUP KOREA CO LTD | 3 |
| 33 | AS153997 | APNICPROJECTELIV-AS-AP - PROJECT ELIV | 3 |
| 34 | AS201159 | RIPENCCKBN-RIPE Kawaii Beer Network | 3 |
| 35 | AS201423 | RIPENCCLUNALIGHT-NETWORK Seojun Yun | 3 |
| 36 | AS213800 | RIPENCCasdf JAIYEON SIM | 3 |
| 37 | AS218681 | RIPENCCGKIM-AS Geonwoo Kim | 3 |
| 38 | AS1781 | APNICKAIST-DAEJEON-AS-KR-KR - Korea Advanced Institute of Science and Technology | 2 |
| 39 | AS18026 | APNICCHEJU-AS-KR-KR - JEJU NATIONAL UNIVERSITY | 2 |
| 40 | AS18168 | APNICCMBTGS-AS-KR-KR - CMB TAEGU BROADCAST SUSEONG | 2 |
| 41 | AS18373 | APNICKOOKMINBANK-AS-KR-KR - KOOKMIN BANK | 2 |
| 42 | AS23714 | APNICKMUCC-AS-KR-KR - Keimyung University | 2 |
| 43 | AS38387 | APNICCMBSEJONG-AS-KR-KR - CMB Sejong Broadcasting Co,.Ltd | 2 |
| 44 | AS133059 | APNICBNZOMULTIMEDIA-AS-AP - BNZO MULTIMEDIA CO., LTD. | 2 |
| 45 | AS135669 | APNICKCINFRA-AS-AP - KCInfra | 2 |
| 46 | AS139311 | APNICSTELLAIT-AS-AP - Stella IT | 2 |
| 47 | AS140894 | APNICBLADESAS-AS-AP - Blade SAS | 2 |
| 48 | AS150414 | APNICDATABROOK-AS-AP - OneCubit Co., Ltd. | 2 |
| 49 | AS151810 | APNICPHYLAXISINC-AS-AP - Phylaxis Korea | 2 |
| 50 | AS153894 | APNICBADACOMMUNICATIONS-AS-AP - Bada Communications | 2 |
| 51 | AS153993 | APNICSKH-AS-AP - SKH Systems | 2 |
| 52 | AS200965 | RIPENCCDongmin Dongmin Lee | 2 |
| 53 | AS200983 | RIPENCCYoungSeoAS YoungSeo Kim | 2 |
| 54 | AS202348 | APNICYLEM1-AS-AP - Young Min Kim | 2 |
| 55 | AS210528 | RIPENCCNavox Navox co.,Ltd | 2 |
| 56 | AS214189 | RIPENCCDoyeonLee-AS Doyeon Lee | 2 |
| 57 | AS214765 | RIPENCCALEX4386-RIPE-NET Sanghui Park | 2 |
| 58 | AS218623 | RIPENCCLEE-AS Lee Wanwoo | 2 |
| 59 | AS218822 | RIPENCCpmh_only Minhyeok Park | 2 |
| 60 | AS401631 | ARINDATAF - DataForge Solutions LLC | 2 |
| 61 | AS401843 | ARINSYNTHETIX-LABS-NETWORK - Synthetix Labs LLC | 2 |
| 62 | AS3608 | APNICKRC-AS-KR-KR - Korea Rural Community Corporation | 1 |
| 63 | AS3748 | APNICETRI-AS-KR-KR - Electronics and Telecommunications Research Institute | 1 |
| 64 | AS3813 | APNICSOGANG-AS-KR-KR - Sogang University | 1 |
| 65 | AS4756 | APNICKNPU1208-AS-KR-KR - Korea National Police University | 1 |
| 66 | AS9452 | APNICKUNET-AS-KR - Korea University | 1 |
| 67 | AS9683 | APNICSFMC-AS-KR-KR - Seoul Facilities Corporation | 1 |
| 68 | AS9753 | APNICDAU-AS-KR - Dong-A Universirty | 1 |
| 69 | AS18023 | APNICKMU-AS-KR-KR - Korea Maritime and Ocean University | 1 |
| 70 | AS18028 | APNICGSNU-AS-KR-KR - GyeongSang National University | 1 |
| 71 | AS18157 | APNICOSB-AS-KR-KR - OSBsavingsbank | 1 |
| 72 | AS23713 | APNICISC-SEL1 - Internet Systems Consortium, Inc. | 1 |
| 73 | AS23908 | APNICAIRPORT-AS-KR-KR - IIAC | 1 |
| 74 | AS23975 | APNICYC-AS-KR-KR - Yonam Institute of Technology | 1 |
| 75 | AS23980 | APNICYU-AS-KR-KR - Yeungnam University | 1 |
| 76 | AS24509 | APNICXpedite-AS-KR - Xpedite Systems Electronic document distribution and data messaging service provider Seoul, Korea | 1 |
| 77 | AS141191 | APNICCLOUDNX-ENT - Creativelab Corp. | 1 |
| 78 | AS150805 | APNICA-FIN-KR-AS - A-FIN KOREA CORP | 1 |
| 79 | AS152671 | APNICSPARCS-AS-KR - SPARCS | 1 |
| 80 | AS152878 | APNICLUNA-AS-AP - Luna | 1 |
| 81 | AS153782 | APNICCOM2MATHINC-AS-AP - Com2Math, Inc. | 1 |
| 82 | AS154270 | APNICVOLVO-GROUP-IT-APNIC-AS-AP - VOLVO GROUP KOREA CO LTD, Construction Equipment Seoul | 1 |
| 83 | AS198840 | RIPENCCAL-CLOUD YUJUN KIM trading as ALCLOUD | 1 |
| 84 | AS198959 | RIPENCCOneroomNetwork Jongmin Park trading as Oneroom Developer | 1 |
| 85 | AS201666 | RIPENCCYSSOFT Yoonsu Son trading as YSSOFT | 1 |
| 86 | AS203040 | RIPENCCAS203040 Sangmyoung Lee | 1 |
| 87 | AS206439 | RIPENCCQUBIT Minseo Kim | 1 |
| 88 | AS211977 | RIPENCCgeumpilko ko geumpil | 1 |
| 89 | AS212388 | RIPENCCAurazCorp Auraz Corporation Co.,Ltd. | 1 |
| 90 | AS215190 | RIPENCCHogok-Network JAESUNG JEONG | 1 |
| 91 | AS219309 | RIPENCCCODELOUNGE-NET CodeLounge Co.,Ltd. | 1 |
| 92 | AS219351 | RIPENCCnevivurn Yongun Seong | 1 |
| 93 | AS219424 | RIPENCCFURRY-NET jeongmin Geum | 1 |
| 94 | AS219432 | RIPENCCMINORI-NETWORK Daun Jeong | 1 |
| 95 | AS1704 | APNICKAIST-SEOUL-AS-KR-KR - Korea Advanced Institute of Science and Technology | 0 |
| 96 | AS2563 | APNICSCU-AS-KR-KR - Seoul Christain University | 0 |
| 97 | AS3357 | APNICVLAN24-AS-KR-KR - VLAN24 | 0 |
| 98 | AS3559 | APNICKORNET-AS-KR-KR - Korea Telecom | 0 |
| 99 | AS3757 | APNICTRAN-AS-KR-KR - Korea Telecom | 0 |
| 100 | AS3784 | APNICPOSTECH-AS-KR-KR - Pohang University of Science and Technology | 0 |
Threat map: malicious IPs in South Korea
1,066 flagged IPv4 networks on 2026-10-10, #4 of 176 countries; 9.47 per million allocated IPv4 addresses (#42 by rate).
IP Address Transfers
Last 12 months: 35 registry transfers involving organisations in South Korea, 24K IPv4 addresses.
IPv4 received from
- 1🇬🇧 United Kingdom3,072
- 2🇺🇸 United States2,048
IPv4 sent to
- 1🇺🇸 United States12K
- 218.37.128.0/22Transfer ·
- AS152281Transfer ·
- AS152284Transfer ·
- 91.240.89.0/24inter-RIRTransfer ·
- 185.130.49.0/24inter-RIRTransfer ·
- AS202348inter-RIRTransfer ·
- 61.110.255.0/24Transfer ·
- 14.0.78.0/23Transfer ·
- 199.241.120.0/21inter-RIRTransfer ·
- AS216425Transfer ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 218.37.128.0/22 | Transfer | |||
| AS152281 | Transfer | |||
| AS152284 | Transfer | |||
| 91.240.89.0/24inter-RIR | Transfer | |||
| 185.130.49.0/24inter-RIR | Transfer | |||
| AS202348inter-RIR | Transfer | |||
| 61.110.255.0/24 | Transfer | |||
| 14.0.78.0/23 | Transfer | |||
| 199.241.120.0/21inter-RIR | Transfer | |||
| AS216425 | Transfer |