List of the top 20 organizations with the largest IP allocations in Estonia
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Telia Eesti AS | 611,584 | 234 | 2 | 36 | |
| Elisa Eesti AS | 177,408 | 1.13 x 235 | 1 | 23 | |
| Haridus- ja Teadusministeerium | 66,816 | 232 | 1 | 4 | |
| 4 | AS INFONET | 52,224 | 232 | 1 | 7 |
| 5 | P.A.G.M. OU | 48,896 | 218 | 2 | 108 |
| 6 | AS STV | 47,104 | 232 | 1 | 13 |
| 7 | NetCrafters OU | 44,800 | 1.5 x 229 | 1 | 175 |
| 8 | Yadda OU | 43,264 | 235 | 2 | 172 |
| 9 | Snowd Security OU | 27,392 | 0 | 1 | 107 |
| 10 | BlueVPS OU | 23,808 | 1.44 x 220 | 1 | 112 |
| 11 | Interhive OU | 21,760 | 0 | 1 | 85 |
| 12 | Information System Authority | 20,736 | 1.38 x 235 | 2 | 10 |
| 13 | AS Telset | 16,384 | 0 | 1 | 4 |
| 14 | Aktsiaselts WaveCom | 15,616 | 232 | 1 | 21 |
| 15 | ISIF OU | 15,360 | 1.26 x 225 | 1 | 79 |
| 16 | Realcloud OU | 15,104 | 1.52 x 225 | 1 | 70 |
| 17 | SmartApe OU | 12,032 | 1.13 x 235 | 2 | 26 |
| 18 | ESTOXY OU | 10,240 | 216 | 2 | 41 |
| 19 | Bifrost Systems OU | 9,984 | 218 | 1 | 43 |
| 20 | Riigi Info- ja Kommunikatsioonitehnoloogia Keskus | 9,472 | 1.32 x 232 | 1 | 46 |