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 | 337,827,840 | 1.6 x 233 | 196 | 12,542 | |
| Amazon.com, Inc. | 220,851,200 | 1.92 x 241 | 6 | 20,632 | |
| AT&T Enterprises, LLC | 129,239,557 | 1.25 x 241 | 27 | 6,035 | |
| 4 | Verizon Business | 107,206,912 | 1.49 x 240 | 57 | 5,893 |
| 5 | Comcast Cable Communications, LLC | 68,530,944 | 1.56 x 249 | 37 | 4,059 |
| 6 | Microsoft Corporation | 68,057,600 | 1.12 x 239 | 15 | 1,718 |
| 7 | Cogent Communications | 54,407,168 | 1.88 x 237 | 3 | 6,169 |
| 8 | Google LLC | 47,268,448 | 1.14 x 237 | 11 | 5,107 |
| 9 | Apple Inc. | 45,725,696 | 1.02 x 234 | 2 | 1,883 |
| 10 | Level 3 Communications, Inc. | 41,415,509 | 1.07 x 237 | 9 | 4,326 |
| 11 | CenturyLink Communications, LLC | 38,224,128 | 1.02 x 240 | 31 | 3,426 |
| 12 | Charter Communications Inc | 37,928,824 | 1.37 x 239 | 15 | 2,118 |
| 13 | Cox Communications Inc. | 23,431,168 | 1.3 x 237 | 1 | 4,875 |
| 14 | Charter Communications | 14,557,184 | 1.13 x 239 | 16 | 9,015 |
| 15 | T-Mobile USA, Inc. | 14,245,120 | 1.11 x 236 | 3 | 537 |
| 16 | Frontier Communications of America, Inc. | 14,111,744 | 1.57 x 236 | 5 | 1,227 |
| 17 | University of California, San Diego | 12,859,914 | 1.25 x 232 | 1 | 24 |
| 18 | Windstream Communications LLC | 12,076,288 | 1.14 x 240 | 3 | 2,406 |
| 19 | Eli Lilly and Company | 10,374,912 | 0 | 1 | 304 |
| 20 | GTT Communications Inc. | 8,599,291 | 1.39 x 238 | 3 | 1,117 |