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 | 14,138,624 | 244 | 4 | 815 | |
| SingTel Optus Pty Ltd | 9,835,010 | 1.5 x 232 | 16 | 1,155 | |
| TPG Internet Pty Ltd | 5,716,338 | 1.17 x 234 | 5 | 12,336 | |
| 4 | iiNet Limited | 3,033,601 | 1.81 x 234 | 5 | 566 |
| 5 | Vodafone Australia Pty Ltd | 2,630,144 | 1.54 x 227 | 2 | 612 |
| 6 | Australian Academic and Research Network | 2,115,840 | 235 | 8 | 245 |
| 7 | VOCUS PTY LTD | 1,794,304 | 1.13 x 235 | 6 | 316 |
| 8 | AAPT Limited | 1,072,144 | 1.5 x 233 | 12 | 744 |
| 9 | SUPERLOOP (AUSTRALIA) PTY LTD | 602,370 | 1.19 x 236 | 3 | 301 |
| 10 | Commonwealth Scientific and Industrial Research Organisation | 592,896 | 1.88 x 227 | 2 | 43 |
| 11 | Wideband Networks Pty Ltd | 573,440 | 237 | 2 | 343 |
| 12 | Wireline | 357,120 | 1.25 x 234 | 1 | 185 |
| 13 | Symbio Networks Pty Ltd | 350,464 | 0 | 1 | 122 |
| 14 | Macquarie Technology Operations Pty Limited | 282,112 | 1.45 x 232 | 2 | 182 |
| 15 | DATACOM SYSTEMS (AU) PTY LTD | 274,176 | 1.06 x 232 | 5 | 79 |
| 16 | Monash University | 261,120 | 1.01 x 232 | 2 | 69 |
| 17 | CITEC | 239,360 | 232 | 1 | 60 |
| 18 | Australian Private Networks Pty Ltd | 237,056 | 0 | 1 | 38 |
| 19 | Verizon Australia Pty Limited | 205,824 | 232 | 1 | 34 |
| 20 | News Digital Media Pty Limited | 196,608 | 0 | 1 | 7 |