List of the top 20 organizations with the largest IP allocations in Australia
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Telstra Limited | 14,327,552 | 244 | 4 | 769 | |
| SingTel Optus Pty Ltd | 10,051,328 | 1.5 x 232 | 14 | 664 | |
| TPG Internet Pty Ltd | 5,623,040 | 1.85 x 233 | 3 | 6,752 | |
| 4 | iiNet Limited | 2,900,992 | 1.01 x 234 | 2 | 477 |
| 5 | Vodafone Australia Pty Ltd | 2,819,584 | 1.07 x 228 | 2 | 1,134 |
| 6 | Australian Academic and Research Network | 1,857,024 | 1.75 x 234 | 9 | 228 |
| 7 | VOCUS PTY LTD | 1,782,016 | 1.26 x 235 | 7 | 331 |
| 8 | AAPT Limited | 1,504,256 | 1.51 x 234 | 14 | 1,921 |
| 9 | Aussie Fibre Pty Ltd | 778,752 | 1.64 x 238 | 2 | 478 |
| 10 | Commonwealth Scientific and Industrial Research Organisation | 620,288 | 1.06 x 232 | 2 | 86 |
| 11 | SUPERLOOP (AUSTRALIA) PTY LTD | 608,768 | 1.25 x 236 | 3 | 257 |
| 12 | Symbio Networks Pty Ltd | 359,936 | 0 | 1 | 143 |
| 13 | Macquarie Technology Operations Pty Limited | 348,928 | 1.45 x 232 | 2 | 185 |
| 14 | Monash University | 267,264 | 1.01 x 232 | 2 | 72 |
| 15 | DATACOM SYSTEMS (AU) PTY LTD | 250,368 | 232 | 3 | 64 |
| 16 | CITEC | 242,176 | 232 | 1 | 66 |
| 17 | Australian Private Networks Pty Ltd | 236,800 | 0 | 1 | 37 |
| 18 | Verizon Australia Pty Limited | 206,592 | 232 | 1 | 36 |
| 19 | Bond University Limited | 197,376 | 0 | 1 | 5 |
| 20 | Department of the Prime Minister and Cabinet | 196,608 | 0 | 1 | 14 |