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 | 70,013,800 | 1.92 x 234 | 4 | 3,271 | |
| SK Broadband Co Ltd | 28,654,300 | 1.5 x 233 | 23 | 1,962 | |
| LG POWERCOMM | 20,996,096 | 0 | 1 | 207 | |
| 4 | LG DACOM Corporation | 8,836,096 | 1.21 x 234 | 2 | 1,051 |
| 5 | SK Telecom | 7,842,560 | 233 | 2 | 75 |
| 6 | LG HelloVision Corp. | 2,224,640 | 0 | 16 | 1,988 |
| 7 | DACOM-PUBNETPLUS | 1,888,128 | 0 | 2 | 288 |
| 8 | DREAMLINE CO. | 1,690,368 | 232 | 1 | 104 |
| 9 | SamsungSDS Inc. | 1,515,776 | 1.75 x 234 | 3 | 155 |
| 10 | Sejong Telecom | 1,037,568 | 233 | 1 | 125 |
| 11 | Shinbiro | 849,152 | 0 | 2 | 363 |
| 12 | DLIVE | 843,264 | 0 | 1 | 479 |
| 13 | LGTELECOM | 758,016 | 1.64 x 230 | 1 | 1,029 |
| 14 | LG CNS | 434,992 | 0 | 1 | 70 |
| 15 | abcle | 425,728 | 0 | 1 | 149 |
| 16 | KINX | 398,912 | 218 | 2 | 222 |
| 17 | Seokyung Cable Television Co.. Ltd. | 393,216 | 0 | 1 | 102 |
| 18 | ELIMNET, INC. | 359,680 | 0 | 1 | 65 |
| 19 | KISTI | 318,020 | 232 | 3 | 244 |
| 20 | NATIONAL INFORMATION RESOURCES SERVICE | 296,760 | 0 | 1 | 704 |