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 | 612,096 | 234 | 2 | 38 | |
| Elisa Eesti AS | 173,312 | 1.13 x 235 | 1 | 21 | |
| Haridus- ja Teadusministeerium | 66,560 | 232 | 1 | 3 | |
| 4 | AS INFONET | 52,480 | 232 | 1 | 11 |
| 5 | P.A.G.M. OU | 51,203 | 1.5 x 217 | 1 | 116 |
| 6 | AS STV | 47,104 | 232 | 1 | 13 |
| 7 | Playtech Estonia OU | 32,768 | 232 | 1 | 130 |
| 8 | Information System Authority | 20,736 | 1.38 x 235 | 2 | 10 |
| 9 | AS Telset | 16,384 | 0 | 1 | 4 |
| 10 | SecureLink Networks OU | 15,616 | 0 | 1 | 26 |
| 11 | Aktsiaselts WaveCom | 14,595 | 232 | 1 | 20 |
| 12 | BlueVPS OU | 14,336 | 1.25 x 220 | 1 | 75 |
| 13 | EstNOC OY | 13,057 | 1.06 x 224 | 1 | 68 |
| 14 | Fill Ltd. | 9,216 | 0 | 1 | 2 |
| 15 | Zone Media OU | 8,704 | 232 | 1 | 16 |
| 16 | UUS PROGRAMM | 8,448 | 0 | 1 | 5 |
| 17 | Compic OU | 7,168 | 232 | 1 | 4 |
| 18 | Brainoza OU | 5,888 | 233 | 1 | 26 |
| 19 | TOP CONNECT OU | 5,632 | 0 | 1 | 12 |
| 20 | AS Tallink Grupp | 5,120 | 0 | 1 | 5 |