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 | 70,016,880 | 1.54 x 236 | 4 | 3,226 | |
| SK Broadband Co Ltd | 28,675,462 | 1.5 x 233 | 23 | 2,134 | |
| LG POWERCOMM | 20,608,512 | 0 | 1 | 212 | |
| 4 | LG DACOM Corporation | 8,748,800 | 1.21 x 234 | 2 | 960 |
| 5 | SK Telecom | 7,776,768 | 233 | 2 | 95 |
| 6 | LG HelloVision Corp. | 3,709,952 | 232 | 16 | 2,102 |
| 7 | DACOM-PUBNETPLUS | 1,885,824 | 0 | 2 | 268 |
| 8 | SamsungSDS Inc. | 1,513,472 | 1.75 x 234 | 3 | 152 |
| 9 | SEJONG NETWORKS | 1,089,090 | 233 | 2 | 214 |
| 10 | DREAMLINE CO. | 916,480 | 232 | 1 | 113 |
| 11 | DLIVE | 842,016 | 0 | 1 | 476 |
| 12 | Shinbiro | 837,632 | 0 | 2 | 370 |
| 13 | LGTELECOM | 730,624 | 1.65 x 230 | 1 | 1,158 |
| 14 | LG CNS | 434,928 | 0 | 1 | 69 |
| 15 | Seokyung Cable Television Co.. Ltd. | 394,240 | 0 | 1 | 103 |
| 16 | KINX | 379,056 | 217 | 2 | 253 |
| 17 | abcle | 370,688 | 0 | 1 | 106 |
| 18 | NATIONAL INFORMATION RESOURCES SERVICE | 365,720 | 0 | 1 | 727 |
| 19 | ELIMNET, INC. | 362,496 | 0 | 1 | 76 |
| 20 | KISTI | 315,136 | 232 | 3 | 248 |