List of the top 20 organizations with the largest IP allocations in United States
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| United States Department of Defense (DoD) | 238,704,640 | 232 | 35 | 4,620 | |
| Amazon.com, Inc. | 224,430,848 | 1.94 x 241 | 6 | 21,589 | |
| AT&T Enterprises, LLC | 129,970,437 | 1.11 x 241 | 28 | 4,459 | |
| 4 | Verizon Business | 107,829,504 | 1.49 x 240 | 60 | 6,065 |
| 5 | DoD Network Information Center | 98,819,584 | 1.09 x 233 | 165 | 8,026 |
| 6 | Comcast Cable Communications, LLC | 68,664,320 | 1.56 x 249 | 37 | 4,115 |
| 7 | Microsoft Corporation | 68,048,896 | 1.12 x 239 | 15 | 1,877 |
| 8 | Google LLC | 52,642,160 | 1.14 x 237 | 13 | 5,352 |
| 9 | Apple Inc. | 45,606,912 | 1.02 x 234 | 2 | 1,911 |
| 10 | Level 3 Communications, Inc. | 41,440,778 | 1.13 x 237 | 9 | 4,383 |
| 11 | Charter Communications Inc | 38,277,216 | 1.37 x 239 | 15 | 2,254 |
| 12 | CenturyLink Communications, LLC | 38,073,088 | 1.02 x 240 | 32 | 3,289 |
| 13 | Cogent Communications | 37,682,176 | 1.35 x 237 | 3 | 5,692 |
| 14 | Cox Communications Inc. | 23,483,904 | 1.05 x 237 | 1 | 5,727 |
| 15 | T-Mobile USA, Inc. | 14,813,696 | 1.12 x 236 | 5 | 660 |
| 16 | Charter Communications | 14,710,272 | 1.14 x 239 | 15 | 7,965 |
| 17 | Frontier Communications of America, Inc. | 14,216,704 | 1.07 x 236 | 5 | 1,327 |
| 18 | University of California, San Diego | 12,859,914 | 1.25 x 232 | 1 | 24 |
| 19 | Windstream Communications LLC | 12,142,080 | 1.47 x 240 | 3 | 2,662 |
| 20 | Eli Lilly and Company | 9,831,936 | 0 | 1 | 290 |