A list of all South Korea ASNs including hosting providers, ISPs, and businesses with announced IPv4 and IPv6 prefixes.
| ASN | Type | IPv4 Routes | IPv6 Routes | Company |
|---|---|---|---|---|
| AS4766 | ISP & Mobile | 2,706 | 32 | Korea Telecom |
| AS9318 | ISP & Mobile | 907 | 4 | SK Broadband Co Ltd |
| AS3786 | ISP & Mobile | 888 | 57 | LG DACOM Corporation |
| AS17841 | Other Business | 715 | 0 | NATIONAL INFORMATION RESOURCES SERVICE |
| AS10036 | ISP & Mobile | 476 | 0 | DLIVE |
| AS45400 | ISP & Mobile | 473 | 0 | Korea Telecom |
| AS45974 | Hosting Provider | 365 | 0 | NAVER Cloud Corp. |
| AS4670 | Other Business | 358 | 0 | Shinbiro |
| AS9845 | ISP & Mobile | 316 | 0 | LG HelloVision Corp. |
| AS9770 | ISP & Mobile | 312 | 0 | LG HelloVision Corp. |
| AS9569 | Other Business | 309 | 0 | SEOCHO CABLE SYSTEMS CO., LTD. |
| AS17853 | ISP & Mobile | 303 | 849 | LGTELECOM |
| AS23584 | Other Business | 283 | 0 | PUSAN CABLE TV SYSTEM CO., LTD. |
| AS18300 | Government | 275 | 0 | KEPCO |
| AS17857 | ISP & Mobile | 244 | 0 | SK Broadband Co Ltd |
| AS9950 | Other Business | 244 | 0 | DACOM-PUBNETPLUS |
| AS17858 | Other Business | 212 | 0 | LG POWERCOMM |
| AS38676 | Other Business | 210 | 0 | flexnetworks |
| AS17598 | ISP & Mobile | 209 | 0 | LG HelloVision Corp. |
| AS9286 | Hosting Provider | 206 | 2 | KINX |
| AS9319 | ISP & Mobile | 203 | 0 | HCN CHUNGBUK CABLE TV SYSTEMS |
| AS1237 | Education | 199 | 4 | KISTI |
| AS17849 | ISP & Mobile | 196 | 0 | SK Broadband Co Ltd |
| AS23563 | ISP & Mobile | 196 | 0 | SK Broadband Co Ltd |
| AS138195 | Hosting Provider | 191 | 4 | MOACK.Co.LTD |
| AS9952 | Hosting Provider | 174 | 0 | Hostway IDC |
| AS23576 | Hosting Provider | 167 | 0 | NAVER Cloud Corp. |
| AS38120 | ISP & Mobile | 164 | 0 | LG HelloVision Corp. |
| AS9689 | ISP & Mobile | 164 | 0 | SK Broadband Co Ltd |
| AS9528 | Government | 155 | 0 | Chungcheongbuk-do Education Research and Information Institute |
| AS9457 | ISP & Mobile | 151 | 1 | DREAMLINE CO. |
| AS38096 | ISP & Mobile | 141 | 0 | SK Broadband Co Ltd |
| AS9848 | Other Business | 140 | 2 | SEJONG NETWORKS |
| AS38669 | ISP & Mobile | 139 | 0 | LG HelloVision Corp. |
| AS7562 | Other Business | 137 | 0 | HCN Dongjak |
| AS38121 | ISP & Mobile | 134 | 0 | LG HelloVision Corp. |
| AS9946 | Other Business | 131 | 0 | KCTV JEJU BROADCASTING |
| AS38091 | ISP & Mobile | 129 | 16 | LG HelloVision Corp. |
| AS38681 | Other Business | 129 | 0 | Jeollanamdo Educational Research Information Institute |
| AS17839 | ISP & Mobile | 125 | 0 | LG HelloVision Corp. |
| AS6619 | Other Business | 116 | 8 | SamsungSDS Inc. |
| AS55592 | Hosting Provider | 116 | 0 | Korea Data Telecommunication Co., Ltd. |
| AS9943 | Other Business | 113 | 0 | KangNam CableTV |
| AS9698 | ISP & Mobile | 111 | 0 | LG HelloVision Corp. |
| AS9762 | Other Business | 111 | 0 | kt HCN Co.,Ltd. |
| AS55615 | Other Business | 109 | 0 | DOUZONEBIZON |
| AS38661 | Education | 106 | 0 | abcle |
| AS9697 | ISP & Mobile | 106 | 0 | LG HelloVision Corp. |
| AS45996 | Other Business | 103 | 0 | DAOU TECHNOLOGY |
| AS9694 | Other Business | 103 | 0 | Seokyung Cable Television Co.. Ltd. |
| AS9754 | Other Business | 103 | 0 | CHOSUN UNIVERSITY |
| AS17589 | Hosting Provider | 98 | 0 | GABIA Inc. |
| AS9323 | Education | 97 | 0 | DONGGUK University |
| AS10054 | Other Business | 89 | 0 | CMB Kwangju Broadcasting |
| AS9524 | Other Business | 86 | 0 | Hyundai Autoever Corp. |
| AS10066 | ISP & Mobile | 85 | 0 | LG HelloVision Corp. |
| AS45382 | Hosting Provider | 85 | 0 | Hostcenter |
| AS10088 | Other Business | 84 | 0 | KWANGWOON UNIVERSITY |
| AS7623 | Other Business | 84 | 0 | Gyeongbuk Cable TV |
| AS9981 | Other Business | 84 | 0 | Saero Network Service LTD |
| AS17881 | Hosting Provider | 83 | 0 | Inet Hosting, Inc. |
| AS17608 | Other Business | 81 | 0 | ABN |
| AS9530 | Other Business | 81 | 0 | SHINSEGAE I C Co., Ltd. |
| AS45370 | Hosting Provider | 78 | 1 | BROADBANDIDC |
| AS4663 | Other Business | 76 | 0 | ELIMNET, INC. |
| AS55618 | Education | 75 | 0 | UNIVERSITY OF ULSAN |
| AS17577 | ISP & Mobile | 74 | 0 | LG HelloVision Corp. |
| AS38684 | Other Business | 74 | 0 | CMB Daejeon Broadcasting Co,.Ltd |
| AS38105 | Education | 72 | 0 | SOON CHUN HYANG UNIVERSITY |
| AS38398 | Other Business | 72 | 0 | Gyeonggi Uijeongbu office of Education |
| AS9842 | Other Business | 72 | 0 | LOTTE INNOVATE Co.,Ltd |
| AS23571 | Other Business | 71 | 0 | Gangwon State Office of Education |
| AS9578 | Other Business | 71 | 0 | Cheiljedang.Co.Inc. |
| AS18305 | Other Business | 68 | 0 | POSCO DX |
| AS4668 | Other Business | 68 | 0 | LG CNS |
| AS18302 | ISP & Mobile | 67 | 0 | SK Telecom |
| AS38701 | Other Business | 67 | 0 | Piranha Systems |
| AS7557 | Other Business | 66 | 0 | KUMHO TIRE |
| AS10160 | ISP & Mobile | 65 | 0 | KDDI KOREA |
| AS9781 | ISP & Mobile | 65 | 0 | GREEN CABLE TELEVISION STATION |
| AS9647 | Government | 64 | 0 | Seoul Metropolitan Government |
| AS23591 | Other Business | 63 | 0 | LS ITC |
| AS131866 | Hosting Provider | 62 | 1 | Digital Edge Korea |
| AS9980 | Other Business | 62 | 0 | LOTTE INNOVATE Co.,Ltd |
| AS45385 | Other Business | 61 | 0 | Daelim Co.,Ltd. |
| AS9757 | Other Business | 60 | 0 | CMB DONDAEMOON BROADCASTING |
| AS23570 | Other Business | 59 | 0 | UNIVERSITY OF INCHEON |
| AS17878 | Hosting Provider | 57 | 0 | DREAMMARK1 |
| AS18313 | ISP & Mobile | 57 | 0 | LG HelloVision Corp. |
| AS9870 | Education | 57 | 0 | DONG-EUI UNIVERSITY |
| AS139648 | Hosting Provider | 56 | 3 | CloudNX |
| AS46010 | Hosting Provider | 55 | 0 | SAMJUNG DATA SERVICE |
| AS131822 | Other Business | 54 | 0 | Korea National University of Transportation |
| AS9526 | Other Business | 54 | 0 | KOSCOM |
| AS17583 | Other Business | 53 | 0 | Keumgang Cable Network |
| AS18176 | Education | 53 | 0 | KOOKMIN UNIVERSITY |
| AS17854 | ISP & Mobile | 52 | 0 | SK Broadband Co Ltd |
| AS38688 | Hosting Provider | 52 | 0 | GSNeotek |
| AS55593 | Other Business | 52 | 0 | netmarble |
| AS9459 | Education | 52 | 0 | Konkuk University |