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 | 69,189,391 | 1.27 x 237 | 3 | 3,580 | |
| SK Broadband Co Ltd | 28,508,871 | 233 | 23 | 1,876 | |
| LG POWERCOMM | 20,602,880 | 1.25 x 23 | 1 | 305 | |
| 4 | LG DACOM Corporation | 8,899,328 | 1.25 x 234 | 2 | 908 |
| 5 | SK Telecom | 7,845,120 | 233 | 2 | 79 |
| 6 | LG HelloVision Corp. | 2,222,080 | 232 | 16 | 1,998 |
| 7 | DACOM-PUBNETPLUS | 1,888,920 | 0 | 2 | 316 |
| 8 | DREAMLINE CO. | 1,793,024 | 232 | 1 | 68 |
| 9 | SamsungSDS Inc. | 1,528,064 | 1.75 x 234 | 3 | 157 |
| 10 | Sejong Telecom | 1,029,376 | 233 | 1 | 93 |
| 11 | Shinbiro | 877,056 | 0 | 2 | 395 |
| 12 | DLIVE | 847,360 | 0 | 1 | 483 |
| 13 | LGTELECOM | 742,400 | 1.61 x 230 | 1 | 806 |
| 14 | abcle | 444,416 | 0 | 1 | 110 |
| 15 | LG CNS | 434,624 | 0 | 1 | 70 |
| 16 | KINX | 393,600 | 218 | 2 | 205 |
| 17 | Seokyung Cable Television Co.. Ltd. | 393,216 | 0 | 1 | 102 |
| 18 | MOACK.Co.LTD | 391,169 | 0 | 2 | 280 |
| 19 | ELIMNET, INC. | 359,680 | 0 | 1 | 65 |
| 20 | KISTI | 317,158 | 232 | 2 | 233 |