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 | 69,447,388 | 1.24 x 237 | 6 | 3,545 | |
| SK Broadband Co Ltd | 28,446,754 | 233 | 23 | 3,175 | |
| LG POWERCOMM | 20,996,096 | 0 | 1 | 207 | |
| 4 | SK Telecom | 14,387,012 | 233 | 2 | 139 |
| 5 | LG DACOM Corporation | 8,939,372 | 1.13 x 232 | 3 | 1,286 |
| 6 | LG HelloVision Corp. | 2,238,355 | 0 | 18 | 1,949 |
| 7 | DACOM-PUBNETPLUS | 1,888,794 | 0 | 2 | 335 |
| 8 | DREAMLINE CO. | 1,793,792 | 232 | 1 | 70 |
| 9 | SamsungSDS Inc. | 1,369,856 | 1.75 x 234 | 2 | 122 |
| 10 | Sejong Telecom | 1,023,392 | 233 | 2 | 87 |
| 11 | Shinbiro | 855,039 | 0 | 2 | 485 |
| 12 | DLIVE | 842,255 | 0 | 1 | 482 |
| 13 | LGTELECOM | 745,160 | 1.33 x 230 | 1 | 604 |
| 14 | purplestones | 478,272 | 0 | 1 | 149 |
| 15 | LG CNS | 437,184 | 0 | 2 | 97 |
| 16 | KINX | 424,993 | 218 | 2 | 1,268 |
| 17 | Seokyung Cable Television Co.. Ltd. | 393,216 | 0 | 1 | 102 |
| 18 | ELIMNET, INC. | 361,472 | 0 | 1 | 72 |
| 19 | KISTI | 320,226 | 232 | 2 | 227 |
| 20 | NATIONAL INFORMATION RESOURCES SERVICE | 295,641 | 0 | 1 | 980 |