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 | 68,379,058 | 1.24 x 237 | 6 | 3,606 | |
| SK Broadband Co Ltd | 28,509,837 | 233 | 23 | 3,535 | |
| LG POWERCOMM | 20,996,096 | 0 | 1 | 207 | |
| 4 | SK Telecom | 14,387,460 | 233 | 2 | 139 |
| 5 | LG DACOM Corporation | 8,947,589 | 234 | 2 | 1,301 |
| 6 | LG HelloVision Corp. | 2,214,547 | 0 | 17 | 1,922 |
| 7 | DACOM-PUBNETPLUS | 1,889,446 | 0 | 2 | 347 |
| 8 | DREAMLINE CO. | 1,793,280 | 232 | 1 | 69 |
| 9 | SamsungSDS Inc. | 1,517,952 | 1.75 x 234 | 3 | 173 |
| 10 | Sejong Telecom | 1,024,992 | 233 | 2 | 93 |
| 11 | Shinbiro | 874,095 | 0 | 2 | 560 |
| 12 | DLIVE | 846,351 | 0 | 1 | 485 |
| 13 | LGTELECOM | 747,528 | 1.6 x 230 | 1 | 751 |
| 14 | abcle | 453,440 | 0 | 1 | 142 |
| 15 | LG CNS | 435,896 | 0 | 2 | 91 |
| 16 | KINX | 427,079 | 218 | 2 | 1,288 |
| 17 | Seokyung Cable Television Co.. Ltd. | 393,216 | 0 | 1 | 102 |
| 18 | ELIMNET, INC. | 359,680 | 0 | 1 | 65 |
| 19 | KISTI | 319,462 | 232 | 2 | 228 |
| 20 | NATIONAL INFORMATION RESOURCES SERVICE | 295,691 | 0 | 1 | 970 |