List of the top 20 organizations with the largest IP allocations in South Korea
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Korea Telecom | 70,015,992 | 1.43 x 237 | 4 | 3,251 | |
| SK Broadband Co Ltd | 28,660,982 | 233 | 23 | 2,447 | |
| LG POWERCOMM | 21,001,728 | 0 | 1 | 218 | |
| 4 | LG DACOM Corporation | 8,726,016 | 1.21 x 234 | 2 | 925 |
| 5 | SK Telecom | 7,271,680 | 233 | 1 | 40 |
| 6 | LG HelloVision Corp. | 3,708,672 | 232 | 16 | 2,097 |
| 7 | DACOM-PUBNETPLUS | 1,884,864 | 0 | 2 | 254 |
| 8 | SamsungSDS Inc. | 1,513,472 | 1.75 x 234 | 3 | 152 |
| 9 | SEJONG NETWORKS | 1,105,730 | 233 | 2 | 229 |
| 10 | DREAMLINE CO. | 914,176 | 232 | 1 | 111 |
| 11 | Shinbiro | 867,328 | 0 | 2 | 416 |
| 12 | DLIVE | 842,528 | 0 | 1 | 478 |
| 13 | LGTELECOM | 775,936 | 1.67 x 230 | 1 | 1,401 |
| 14 | LG CNS | 433,392 | 0 | 1 | 63 |
| 15 | Seokyung Cable Television Co.. Ltd. | 394,240 | 0 | 1 | 103 |
| 16 | abcle | 389,888 | 0 | 1 | 121 |
| 17 | KINX | 369,264 | 217 | 2 | 238 |
| 18 | NATIONAL INFORMATION RESOURCES SERVICE | 366,136 | 0 | 1 | 722 |
| 19 | ELIMNET, INC. | 362,752 | 0 | 1 | 77 |
| 20 | KISTI | 315,136 | 232 | 3 | 248 |