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 | 339,391,232 | 1.5 x 233 | 195 | 12,255 | |
| Verizon Business | 131,406,336 | 1.55 x 240 | 36 | 5,507 | |
| AT&T Services, Inc. | 114,466,821 | 1.39 x 241 | 8 | 3,517 | |
| 4 | Comcast Cable Communications, LLC | 70,743,808 | 1.06 x 249 | 36 | 4,337 |
| 5 | Microsoft Corporation | 67,887,616 | 1.12 x 239 | 13 | 1,402 |
| 6 | Amazon.com, Inc. | 67,087,616 | 1.72 x 237 | 6 | 17,469 |
| 7 | Cogent Communications | 55,065,600 | 1.89 x 237 | 3 | 7,139 |
| 8 | Apple Inc. | 45,780,480 | 1.02 x 234 | 2 | 1,815 |
| 9 | Google LLC | 45,586,848 | 1.01 x 237 | 11 | 4,585 |
| 10 | Level 3 Communications, Inc. | 44,611,635 | 1.42 x 237 | 10 | 4,515 |
| 11 | Charter Communications Inc | 38,827,008 | 1.37 x 239 | 15 | 2,031 |
| 12 | CenturyLink Communications, LLC | 38,328,064 | 1.02 x 240 | 32 | 3,600 |
| 13 | Cox Communications Inc. | 25,523,456 | 1.55 x 237 | 1 | 10,941 |
| 14 | T-Mobile USA, Inc. | 14,757,632 | 1.11 x 236 | 3 | 539 |
| 15 | Charter Communications | 14,442,752 | 1.12 x 239 | 16 | 5,798 |
| 16 | Frontier Communications of America, Inc. | 14,120,192 | 1.63 x 235 | 5 | 1,208 |
| 17 | Windstream Communications LLC | 13,211,904 | 1.72 x 239 | 3 | 1,967 |
| 18 | University of California, San Diego | 12,859,914 | 1.25 x 232 | 1 | 23 |
| 19 | Sprint | 11,938,817 | 1.44 x 236 | 4 | 317 |
| 20 | Eli Lilly and Company | 11,425,792 | 0 | 1 | 315 |