List of the top 20 organizations with the largest IP allocations in United States
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| DoD Network Information Center | 337,751,040 | 1.61 x 233 | 196 | 12,348 | |
| Amazon.com, Inc. | 215,959,040 | 1.91 x 241 | 6 | 20,434 | |
| AT&T Enterprises, LLC | 129,091,333 | 1.25 x 241 | 27 | 6,043 | |
| 4 | Verizon Business | 106,333,440 | 1.49 x 240 | 57 | 5,823 |
| 5 | Comcast Cable Communications, LLC | 68,530,432 | 1.06 x 249 | 37 | 4,074 |
| 6 | Microsoft Corporation | 68,028,672 | 1.12 x 239 | 15 | 1,650 |
| 7 | Cogent Communications | 54,542,592 | 1.07 x 238 | 3 | 6,362 |
| 8 | Google LLC | 46,945,952 | 1.14 x 237 | 11 | 4,969 |
| 9 | Apple Inc. | 45,710,336 | 1.02 x 234 | 2 | 1,866 |
| 10 | Level 3 Communications, Inc. | 44,081,173 | 1.32 x 237 | 9 | 4,665 |
| 11 | CenturyLink Communications, LLC | 38,228,992 | 1.02 x 240 | 31 | 3,439 |
| 12 | Charter Communications Inc | 38,104,688 | 1.37 x 239 | 15 | 2,070 |
| 13 | Cox Communications Inc. | 23,428,608 | 1.3 x 237 | 1 | 4,888 |
| 14 | Charter Communications | 14,554,112 | 1.13 x 239 | 16 | 8,267 |
| 15 | T-Mobile USA, Inc. | 14,242,304 | 1.11 x 236 | 3 | 532 |
| 16 | Frontier Communications of America, Inc. | 14,086,912 | 1.57 x 236 | 5 | 1,222 |
| 17 | University of California, San Diego | 12,859,914 | 1.25 x 232 | 1 | 24 |
| 18 | Windstream Communications LLC | 11,981,568 | 1.13 x 240 | 3 | 2,313 |
| 19 | Eli Lilly and Company | 10,374,400 | 0 | 1 | 302 |
| 20 | GTT Communications Inc. | 8,565,787 | 1.91 x 237 | 3 | 1,037 |