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 | 70,008,320 | 1.48 x 236 | 4 | 3,213 | |
| SK Broadband Co Ltd | 28,666,630 | 1.5 x 233 | 23 | 2,110 | |
| LG POWERCOMM | 21,001,728 | 0 | 1 | 218 | |
| 4 | LG DACOM Corporation | 8,768,165 | 1.21 x 234 | 2 | 5,266 |
| 5 | SK Telecom | 7,916,032 | 233 | 2 | 107 |
| 6 | LG HelloVision Corp. | 3,710,720 | 232 | 16 | 2,083 |
| 7 | DACOM-PUBNETPLUS | 1,885,336 | 0 | 2 | 259 |
| 8 | DREAMLINE CO. | 1,702,144 | 232 | 1 | 140 |
| 9 | SamsungSDS Inc. | 1,515,520 | 1.75 x 234 | 3 | 157 |
| 10 | SEJONG NETWORKS | 1,103,104 | 233 | 2 | 203 |
| 11 | Shinbiro | 867,072 | 0 | 2 | 415 |
| 12 | DLIVE | 842,016 | 0 | 1 | 476 |
| 13 | LGTELECOM | 765,440 | 1.64 x 230 | 1 | 1,111 |
| 14 | LG CNS | 434,992 | 0 | 1 | 70 |
| 15 | Seokyung Cable Television Co.. Ltd. | 391,168 | 0 | 1 | 101 |
| 16 | KINX | 385,712 | 217 | 2 | 270 |
| 17 | abcle | 373,504 | 0 | 1 | 114 |
| 18 | NATIONAL INFORMATION RESOURCES SERVICE | 366,168 | 0 | 1 | 725 |
| 19 | ELIMNET, INC. | 362,496 | 0 | 1 | 76 |
| 20 | KISTI | 311,296 | 232 | 3 | 234 |