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 | 14,489,088 | 244 | 3 | 1,408 | |
| SingTel Optus Pty Ltd | 10,043,068 | 1.5 x 232 | 13 | 1,175 | |
| TPG Internet Pty Ltd | 5,337,869 | 1.79 x 233 | 7 | 6,720 | |
| 4 | iiNet Limited | 3,122,434 | 1.81 x 234 | 5 | 641 |
| 5 | VOCUS PTY LTD | 2,009,096 | 1.75 x 234 | 9 | 316 |
| 6 | Australian Academic and Research Network | 1,952,256 | 235 | 8 | 252 |
| 7 | AAPT Limited | 1,156,608 | 1.5 x 233 | 13 | 638 |
| 8 | Foxtel Management Pty Ltd | 805,632 | 1.26 x 231 | 2 | 224 |
| 9 | Commonwealth Scientific and Industrial Research Organisation | 595,968 | 1.03 x 232 | 2 | 39 |
| 10 | Wideband Networks Pty Ltd | 446,976 | 1.03 x 237 | 2 | 457 |
| 11 | Symbio Networks Pty Ltd | 414,615 | 0 | 1 | 324 |
| 12 | Exetel Pty Ltd | 412,672 | 1.04 x 232 | 1 | 160 |
| 13 | Iseek Communications Pty Ltd | 282,880 | 232 | 2 | 210 |
| 14 | DATACOM SYSTEMS (AU) PTY LTD | 271,616 | 1.06 x 232 | 6 | 65 |
| 15 | CITEC | 238,848 | 232 | 1 | 58 |
| 16 | SUPERLOOP (AUSTRALIA) PTY LTD | 210,435 | 1.19 x 236 | 7 | 222 |
| 17 | Verizon Australia Pty Limited | 209,152 | 232 | 1 | 43 |
| 18 | Wireline B and G Pty Ltd | 197,632 | 1.38 x 234 | 2 | 179 |
| 19 | SkyMesh Pty Ltd | 167,680 | 1.27 x 232 | 1 | 55 |
| 20 | ACT Government InTACT Group | 163,072 | 0 | 2 | 8 |