Australia · ISP
AS4804
Optus / Microplex PTY LTD
ISP APNIC MPX-AS
The second Australian carrier. Smaller and less frequently allowlisted than Telstra.
ISP — Residential eyeball network. Addresses here look like customers, because they are.
- Announced prefixes
- 4
- 4 IPv4 · 0 IPv6
- IPv4 addresses
- 1.4M
- across the blocks listed below
- Largest block
- /12
- smallest prefix length announced
- Registry
- APNIC
- MPX-AS
01 Ranges
Announced ranges
The blocks AS4804 advertises to the rest of the internet in this snapshot. A production routing table carries more — large carriers de-aggregate for traffic engineering — so treat the totals as a floor.
Matched in your browser against the 4 blocks below. Nothing is sent anywhere.
IPv4 — 4 blocks
| Prefix | First address | Last address | Addresses |
|---|---|---|---|
| 27.32.0.0/12 | 27.32.0.0 | 27.47.255.255 | 1,048,576 |
| 121.44.0.0/14 | 121.44.0.0 | 121.47.255.255 | 262,144 |
| 203.2.192.0/19 | 203.2.192.0 | 203.2.223.255 | 8,192 |
| 211.26.0.0/16 | 211.26.0.0 | 211.26.255.255 | 65,536 |
No IPv6 announcement recorded for AS4804 in this snapshot. That is common for networks whose v6 deployment sits behind a separate AS number.