List of the top 20 organizations with the largest IP allocations in Switzerland
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Swisscom (Schweiz) AG | 8,229,120 | 1.69 x 238 | 4 | 425 | |
| Sunrise GmbH | 3,868,416 | 1.56 x 238 | 1 | 183 | |
| SWITCH | 2,184,192 | 1.31 x 237 | 1 | 125 | |
| 4 | green.ch AG | 491,776 | 1.06 x 236 | 1 | 84 |
| 5 | CERN - European Organization for Nuclear Research | 354,816 | 233 | 1 | 22 |
| 6 | Migros-Genossenschafts-Bund | 330,496 | 0 | 1 | 13 |
| 7 | Quickline AG | 322,816 | 1.38 x 239 | 1 | 98 |
| 8 | VTX Services SA | 315,648 | 233 | 3 | 37 |
| 9 | Hoffmann - La Roche Ltd. | 202,496 | 233 | 1 | 29 |
| 10 | ABB Information Systems Ltd | 166,656 | 0 | 1 | 17 |
| 11 | Die Schweizerische Post AG | 165,888 | 1.5 x 233 | 1 | 7 |
| 12 | Init7 (Switzerland) Ltd. | 162,304 | 1.63 x 236 | 1 | 81 |
| 13 | Zurich Insurance Company | 149,504 | 0 | 1 | 10 |
| 14 | Iway AG | 138,240 | 1.72 x 236 | 3 | 50 |
| 15 | ETAT DE GENEVE | 136,960 | 232 | 1 | 10 |
| 16 | Swiss Federation represented by FOITT | 135,168 | 232 | 1 | 5 |
| 17 | netplus.ch SA | 134,144 | 1.25 x 235 | 1 | 38 |
| 18 | International Telecommunication Union | 131,584 | 216 | 1 | 6 |
| 19 | Centre Informatique Etat de Fribourg | 131,072 | 0 | 1 | 2 |
| 20 | Bank Julius Baer & Co. AG | 131,072 | 228 | 1 | 4 |