List of the top 20 organizations with the largest IP allocations in Germany
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Deutsche Telekom AG | 36,201,472 | 245 | 4 | 1,099 | |
| Mercedes-Benz Group AG | 16,805,888 | 1.13 x 235 | 1 | 18 | |
| Vodafone GmbH | 15,889,920 | 1.05 x 242 | 1 | 331 | |
| 4 | Telefonica Germany GmbH & Co.OHG | 8,400,384 | 1.13 x 241 | 2 | 39 |
| 5 | Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. | 7,913,472 | 1.13 x 238 | 1 | 318 |
| 6 | Hetzner Online GmbH | 3,680,768 | 1.63 x 236 | 4 | 777 |
| 7 | 1&1 Versatel GmbH | 2,453,248 | 1.4 x 237 | 1 | 641 |
| 8 | Universitaet Stuttgart | 2,323,456 | 1.56 x 236 | 1 | 99 |
| 9 | EWE TEL GmbH | 958,208 | 1.44 x 237 | 2 | 63 |
| 10 | Plusnet GmbH | 918,528 | 1.81 x 236 | 1 | 89 |
| 11 | IONOS SE | 896,768 | 1.38 x 236 | 1 | 538 |
| 12 | Deutsche Post AG | 787,200 | 0 | 1 | 14 |
| 13 | euNetworks GmbH | 581,377 | 1.81 x 236 | 3 | 64 |
| 14 | NetCologne Gesellschaft fur Telekommunikation mbH | 576,256 | 1.63 x 237 | 1 | 49 |
| 15 | Tele Columbus AG | 537,344 | 1.77 x 235 | 4 | 105 |
| 16 | ecotel communication ag | 536,576 | 1.5 x 233 | 1 | 40 |
| 17 | M-net Telekommunikations GmbH | 523,008 | 1.06 x 236 | 1 | 79 |
| 18 | Contabo GmbH | 477,696 | 1.25 x 234 | 1 | 571 |
| 19 | Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 400,896 | 1.72 x 223 | 8 | 492 |
| 20 | Leibniz-Rechenzentrum | 395,264 | 235 | 1 | 11 |