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 | 69,455,717 | 1.24 x 237 | 6 | 3,559 | |
| SK Broadband Co Ltd | 25,061,899 | 233 | 5 | 699 | |
| LG POWERCOMM | 20,996,096 | 0 | 1 | 207 | |
| 4 | SK Telecom | 14,389,508 | 233 | 2 | 122 |
| 5 | LG DACOM Corporation | 8,925,420 | 1.13 x 232 | 3 | 1,340 |
| 6 | LG HelloVision Corp. | 2,190,739 | 0 | 18 | 1,995 |
| 7 | DACOM-PUBNETPLUS | 1,888,722 | 0 | 2 | 345 |
| 8 | DREAMLINE CO. | 1,793,792 | 232 | 1 | 70 |
| 9 | T Broad | 1,327,084 | 0 | 9 | 342 |
| 10 | SamsungSDS Inc. | 1,237,760 | 1.75 x 234 | 2 | 117 |
| 11 | Sejong Telecom | 1,022,368 | 233 | 2 | 83 |
| 12 | DLIVE | 842,191 | 0 | 1 | 480 |
| 13 | Shinbiro | 834,071 | 0 | 2 | 403 |
| 14 | Tbroad Ginam Broadcating Co., Ltd. | 771,356 | 0 | 1 | 694 |
| 15 | LGTELECOM | 751,744 | 1.32 x 230 | 1 | 567 |
| 16 | purplestones | 554,848 | 0 | 1 | 281 |
| 17 | LG CNS | 439,273 | 0 | 2 | 108 |
| 18 | KINX | 425,037 | 218 | 2 | 1,248 |
| 19 | Tbroad Suwon Broadcasting Corporation | 406,784 | 1.94 x 236 | 1 | 159 |
| 20 | Seokyung Cable Television Co.. Ltd. | 393,216 | 0 | 1 | 102 |