List of the top 20 organizations with the largest IP allocations in Australia
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Telstra Corporation Limited | 14,269,184 | 244 | 8 | 829 | |
| SingTel Optus Pty Ltd | 10,728,366 | 1.5 x 232 | 17 | 1,336 | |
| TPG Internet Pty Ltd | 5,447,097 | 1.16 x 234 | 7 | 8,676 | |
| 4 | Vodafone Australia Pty Ltd | 4,099,584 | 1.7 x 229 | 2 | 1,001 |
| 5 | iiNet Limited | 3,110,400 | 1.81 x 234 | 5 | 588 |
| 6 | Australian Academic and Research Network | 2,116,608 | 235 | 8 | 252 |
| 7 | VOCUS PTY LTD | 1,868,584 | 1.13 x 235 | 6 | 342 |
| 8 | AAPT Limited | 1,080,905 | 1.5 x 233 | 12 | 840 |
| 9 | Foxtel Management Pty Ltd | 825,856 | 1.26 x 231 | 2 | 235 |
| 10 | SUPERLOOP (AUSTRALIA) PTY LTD | 605,954 | 1.19 x 236 | 5 | 322 |
| 11 | Commonwealth Scientific and Industrial Research Organisation | 595,968 | 1.88 x 227 | 2 | 45 |
| 12 | Wideband Networks Pty Ltd | 497,152 | 237 | 2 | 313 |
| 13 | Symbio Networks Pty Ltd | 351,744 | 0 | 1 | 155 |
| 14 | Macquarie Corporate Telecommunications | 292,960 | 1.46 x 232 | 3 | 192 |
| 15 | Iseek Communications Pty Ltd | 279,040 | 232 | 2 | 207 |
| 16 | DATACOM SYSTEMS (AU) PTY LTD | 273,664 | 1.06 x 232 | 6 | 77 |
| 17 | Wireline | 271,104 | 0 | 1 | 185 |
| 18 | Monash University | 261,120 | 1.01 x 232 | 2 | 70 |
| 19 | CITEC | 239,360 | 232 | 1 | 60 |
| 20 | Australian Private Networks Pty Ltd | 237,056 | 0 | 1 | 38 |