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 | 69,446,460 | 1.24 x 237 | 6 | 3,548 | |
| SK Broadband Co Ltd | 28,503,782 | 1.94 x 236 | 23 | 3,214 | |
| LG POWERCOMM | 20,996,096 | 0 | 1 | 207 | |
| 4 | SK Telecom | 14,356,740 | 233 | 2 | 131 |
| 5 | LG DACOM Corporation | 8,930,332 | 1.13 x 232 | 3 | 1,296 |
| 6 | LG HelloVision Corp. | 2,308,755 | 0 | 18 | 2,062 |
| 7 | DACOM-PUBNETPLUS | 1,888,826 | 0 | 2 | 343 |
| 8 | DREAMLINE CO. | 1,793,792 | 232 | 1 | 70 |
| 9 | SamsungSDS Inc. | 1,238,784 | 1.75 x 234 | 2 | 120 |
| 10 | Sejong Telecom | 1,022,919 | 233 | 2 | 97 |
| 11 | DLIVE | 842,255 | 0 | 1 | 482 |
| 12 | Shinbiro | 837,247 | 0 | 2 | 413 |
| 13 | LGTELECOM | 745,152 | 1.33 x 230 | 1 | 579 |
| 14 | purplestones | 502,976 | 0 | 1 | 171 |
| 15 | LG CNS | 439,265 | 0 | 2 | 107 |
| 16 | KINX | 425,121 | 218 | 2 | 1,252 |
| 17 | Seokyung Cable Television Co.. Ltd. | 393,216 | 0 | 1 | 102 |
| 18 | ELIMNET, INC. | 361,472 | 0 | 1 | 72 |
| 19 | KISTI | 321,506 | 232 | 2 | 216 |
| 20 | NATIONAL INFORMATION RESOURCES SERVICE | 295,873 | 0 | 1 | 972 |