List of the top 20 organizations with the largest IP allocations in United States
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Global Resource Systems, LLC | 178,481,664 | 0 | 1 | 764 | |
| AT&T Services, Inc. | 116,492,801 | 1.22 x 241 | 10 | 2,371 | |
| DoD Network Information Center | 99,607,040 | 233 | 223 | 8,288 | |
| 4 | Comcast Cable Communications, LLC | 76,204,036 | 1.03 x 245 | 41 | 4,664 |
| 5 | MCI Communications Services, Inc. d/b/a Verizon Business | 64,909,440 | 1.28 x 240 | 37 | 23,385 |
| 6 | Amazon.com, Inc. | 55,969,280 | 1.54 x 236 | 5 | 7,762 |
| 7 | Level 3 Communications, Inc. | 48,681,376 | 2 x 237 | 15 | 4,403 |
| 8 | Microsoft Corporation | 47,820,800 | 1.04 x 239 | 15 | 585 |
| 9 | Apple Inc. | 45,915,392 | 1.03 x 234 | 3 | 1,370 |
| 10 | Cellco Partnership DBA Verizon Wireless | 43,217,664 | 1.32 x 237 | 4 | 2,473 |
| 11 | CenturyLink Communications, LLC | 42,623,408 | 1.05 x 240 | 43 | 4,755 |
| 12 | Charter Communications Inc | 38,323,200 | 1.49 x 239 | 16 | 2,020 |
| 13 | Cogent Communications | 29,230,848 | 1.85 x 237 | 3 | 4,091 |
| 14 | Google LLC | 26,305,664 | 1.51 x 236 | 8 | 1,305 |
| 15 | Eli Lilly and Company | 25,649,152 | 0 | 1 | 270 |
| 16 | Windstream Communications LLC | 23,580,156 | 1.96 x 237 | 15 | 100,902 |
| 17 | Cox Communications Inc. | 23,117,568 | 1.84 x 236 | 4 | 5,263 |
| 18 | Sprint | 18,947,940 | 1.25 x 236 | 7 | 1,453 |
| 19 | Frontier Communications of America, Inc. | 15,213,568 | 1.02 x 234 | 6 | 2,596 |
| 20 | Charter Communications | 14,019,328 | 1.34 x 238 | 9 | 3,107 |