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 | 69,953,792 | 1.09 x 235 | 4 | 2,259 | |
| SK Broadband Co Ltd | 28,646,448 | 1.5 x 233 | 23 | 2,012 | |
| LG POWERCOMM | 21,000,960 | 0 | 1 | 215 | |
| 4 | LG DACOM Corporation | 8,774,255 | 1.21 x 234 | 2 | 5,232 |
| 5 | SK Telecom | 7,921,920 | 233 | 2 | 121 |
| 6 | LG HelloVision Corp. | 3,720,960 | 232 | 16 | 2,116 |
| 7 | DACOM-PUBNETPLUS | 1,882,624 | 0 | 2 | 44 |
| 8 | DREAMLINE CO. | 1,696,256 | 232 | 1 | 120 |
| 9 | SamsungSDS Inc. | 1,515,008 | 1.75 x 234 | 3 | 155 |
| 10 | SEJONG NETWORKS | 1,093,888 | 233 | 2 | 167 |
| 11 | Shinbiro | 856,832 | 0 | 2 | 374 |
| 12 | DLIVE | 841,472 | 0 | 1 | 474 |
| 13 | LGTELECOM | 763,904 | 1.64 x 230 | 1 | 1,099 |
| 14 | LG CNS | 434,432 | 0 | 1 | 63 |
| 15 | Seokyung Cable Television Co.. Ltd. | 393,472 | 0 | 1 | 103 |
| 16 | KINX | 381,440 | 1.5 x 217 | 2 | 231 |
| 17 | abcle | 373,504 | 0 | 1 | 114 |
| 18 | ELIMNET, INC. | 360,448 | 0 | 1 | 68 |
| 19 | KISTI | 311,960 | 232 | 3 | 244 |
| 20 | NATIONAL INFORMATION RESOURCES SERVICE | 289,280 | 0 | 1 | 459 |